diff --git a/.github/workflows/config.yml b/.github/workflows/config.yml
index 513f7acf4e..85b42d5272 100644
--- a/.github/workflows/config.yml
+++ b/.github/workflows/config.yml
@@ -11,125 +11,210 @@ on:
 
 env:
   MIX_ENV: test
+  OTP_VERSION: '23.3.4.1'
+  ELIXIR_VERSION: '1.11.4'
 
 jobs:
-  build:
+  build-and-cache:
+    name: Build and Cache deps
     runs-on: ubuntu-18.04
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-elixir@v1
         with:
-          otp-version: '23.3.4.1'
-          elixir-version: '1.11.4'
-      - run: mix local.hex --force
-      - run: mix local.rebar --force
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+
       - name: "ELIXIR_VERSION.lock"
         run: echo "${ELIXIR_VERSION}" > ELIXIR_VERSION.lock
+
       - name: "OTP_VERSION.lock"
         run: echo "${OTP_VERSION}" > OTP_VERSION.lock
-      - run: mix deps.get
-      - run: npm install
+
+      - name: Restore Mix Deps Cache
+        uses: actions/cache@v2
+        id: deps-cache
+        with:
+          path: | 
+            deps
+            _build
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-
+
+      - name: Conditionally build Mix deps cache
+        if: steps.deps-cache.outputs.cache-hit != 'true'
+        run: |
+          mix local.hex --force
+          mix local.rebar --force
+          mix deps.get
+          mix deps.compile
+          cd deps/libsecp256k1
+          make
+
+      - name: Restore Explorer NPM Cache
+        uses: actions/cache@v2
+        id: explorer-npm-cache
+        with:
+          path: apps/explorer/node_modules
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-explorer-npm-${{ hashFiles('apps/explorer/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-explorer-npm-
+
+      - name: Conditionally build Explorer NPM Cache
+        if: steps.explorer-npm-cache.outputs.cache-hit != 'true'
+        run: npm install
         working-directory: apps/explorer
-      - run: npm install
-        working-directory: apps/block_scout_web/assets
-      - run: npm rebuild node-sass
+
+      - name: Restore Blockscout Web NPM Cache
+        uses: actions/cache@v2
+        id: blockscoutweb-npm-cache
+        with:
+          path: apps/block_scout_web/assets/node_modules
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-blockscoutweb-npm-${{ hashFiles('apps/block_scout_web/assets/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-blockscoutweb-npm-
+
+      - name: Conditionally build Blockscout Web NPM Cache
+        if: steps.blockscoutweb-npm-cache.outputs.cache-hit != 'true'
+        run: npm install
         working-directory: apps/block_scout_web/assets
-      - run: mix compile
-      - run: make
-        working-directory: "deps/libsecp256k1"
-      - name: Build assets
-        run: node node_modules/webpack/bin/webpack.js --mode development
-        working-directory: "apps/block_scout_web/assets"
+
   credo:
+    name: Credo
     runs-on: ubuntu-18.04
+    needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-elixir@v1
         with:
-          otp-version: '23.3.4.1'
-          elixir-version: '1.11.4'
-      - run: mix local.hex --force
-      - run: mix local.rebar --force
-      - run: mix deps.get
-      - run: mix compile
-      - run: make
-        working-directory: "deps/libsecp256k1"
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+      
+      - name: Restore Mix Deps Cache
+        uses: actions/cache@v2
+        id: deps-cache
+        with:
+          path: | 
+            deps
+            _build
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
+
       - run: mix credo
+
   check_formatted:
+    name: Code formatting checks
     runs-on: ubuntu-18.04
+    needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-elixir@v1
         with:
-          otp-version: '23.3.4.1'
-          elixir-version: '1.11.4'
-      - run: mix local.hex --force
-      - run: mix local.rebar --force
-      - run: mix deps.get
-      - run: mix compile
-      - run: make
-        working-directory: "deps/libsecp256k1"
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+
+      - name: Restore Mix Deps Cache
+        uses: actions/cache@v2
+        id: deps-cache
+        with:
+          path: | 
+            deps
+            _build
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
+
       - run: mix format --check-formatted
   dialyzer:
+    name: Dialyzer static analysis
     runs-on: ubuntu-18.04
+    needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-elixir@v1
         with:
-          otp-version: '23.3.4.1'
-          elixir-version: '1.11.4'
-      - run: mix local.hex --force
-      - run: mix local.rebar --force
-      - run: mix deps.get
-      - run: mix compile
-      - run: make
-        working-directory: "deps/libsecp256k1"
-      - name: Unpack PLT cache
-        run: |
-          mkdir -p _build/test
-          cp plts/dialyxir*.plt _build/test/ || true
-          mkdir -p ~/.mix
-          cp plts/dialyxir*.plt ~/.mix/ || true
-      - run: mix dialyzer --plt
-      - name: Pack PLT cache
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+
+      - name: Restore Mix Deps Cache
+        uses: actions/cache@v2
+        id: deps-cache
+        with:
+          path: | 
+            deps
+            _build
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
+
+      - name: Restore Dialyzer Cache
+        uses: actions/cache@v2
+        id: dialyzer-cache
+        with:
+          path: priv/plts
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-dialyzer-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-dialyzer-"
+
+      - name: Conditionally build Dialyzer Cache
+        if: steps.dialyzer-cache.output.cache-hit != 'true'
         run: |
-          mkdir -p plts
-          cp _build/test/dialyxir*.plt plts/
-          cp ~/.mix/dialyxir*.plt plts/
+          mkdir -p priv/plts
+          mix dialyzer --plt
+
       - run: mix dialyzer --halt-exit-status
+        name: Run Dialyzer
+
   gettext:
+    name: Missing translation keys check
     runs-on: ubuntu-18.04
+    needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-elixir@v1
         with:
-          otp-version: '23.3.4.1'
-          elixir-version: '1.11.4'
-      - run: mix local.hex --force
-      - run: mix local.rebar --force
-      - run: mix deps.get
-      - run: mix compile
-      - run: make
-        working-directory: "deps/libsecp256k1"
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+
+      - name: Restore Mix Deps Cache
+        uses: actions/cache@v2
+        id: deps-cache
+        with:
+          path: | 
+            deps
+            _build
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
+
       - run: |
           mix gettext.extract --merge | tee stdout.txt
           ! grep "Wrote " stdout.txt
         working-directory: "apps/block_scout_web"
   sobelow:
+    name: Sobelow security analysis
     runs-on: ubuntu-18.04
+    needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-elixir@v1
         with:
-          otp-version: '23.3.4.1'
-          elixir-version: '1.11.4'
-      - run: mix local.hex --force
-      - run: mix local.rebar --force
-      - run: mix deps.get
-      - run: mix deps.compile
-      - run: mix compile
-      - run: make
-        working-directory: "deps/libsecp256k1"
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+
+      - name: Mix Deps Cache
+        uses: actions/cache@v2
+        id: deps-cache
+        with:
+          path: | 
+            deps
+            _build
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
+
       - name: Scan explorer for vulnerabilities
         run: mix sobelow --config
         working-directory: "apps/explorer"
@@ -137,57 +222,99 @@ jobs:
         run: mix sobelow --config
         working-directory: "apps/block_scout_web"
   eslint:
+    name: ESLint
     runs-on: ubuntu-18.04
+    needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-elixir@v1
         with:
-          otp-version: '23.3.4.1'
-          elixir-version: '1.11.4'
-      - run: mix local.hex --force
-      - run: mix local.rebar --force
-      - run: mix deps.get
-      - run: npm install
-        working-directory: apps/explorer
-      - run: npm install
-        working-directory: apps/block_scout_web/assets
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+
+      - name: Mix Deps Cache
+        uses: actions/cache@v2
+        id: deps-cache
+        with:
+          path: | 
+            deps
+            _build
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
+
+      - name: Restore Explorer NPM Cache
+        uses: actions/cache@v2
+        id: explorer-npm-cache
+        with:
+          path: apps/explorer/node_modules
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-explorer-npm-${{ hashFiles('apps/explorer/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-explorer-npm-
+
+      - name: Restore Blockscout Web NPM Cache
+        uses: actions/cache@v2
+        id: blockscoutweb-npm-cache
+        with:
+          path: apps/block_scout_web/assets/node_modules
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-blockscoutweb-npm-${{ hashFiles('apps/block_scout_web/assets/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-blockscoutweb-npm-
+
       - run: npm rebuild node-sass
         working-directory: apps/block_scout_web/assets
-      - run: mix compile
-      - run: make
-        working-directory: "deps/libsecp256k1"
+
       - name: Build assets
         run: node node_modules/webpack/bin/webpack.js --mode development
         working-directory: "apps/block_scout_web/assets"
+
       - run: ./node_modules/.bin/eslint --format=junit --output-file="test/eslint/junit.xml" js/**
         working-directory: apps/block_scout_web/assets
   jest:
+    name: JS Tests
     runs-on: ubuntu-18.04
+    needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-elixir@v1
         with:
-          otp-version: '23.3.4.1'
-          elixir-version: '1.11.4'
-      - run: mix local.hex --force
-      - run: mix local.rebar --force
-      - run: mix deps.get
-      - run: npm install
-        working-directory: apps/explorer
-      - run: npm install
-        working-directory: apps/block_scout_web/assets
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+
+      - name: Mix Deps Cache
+        uses: actions/cache@v2
+        id: deps-cache
+        with:
+          path: | 
+            deps
+            _build
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
+
+      - name: Restore Blockscout Web NPM Cache
+        uses: actions/cache@v2
+        id: blockscoutweb-npm-cache
+        with:
+          path: apps/block_scout_web/assets/node_modules
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-blockscoutweb-npm-${{ hashFiles('apps/block_scout_web/assets/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-blockscoutweb-npm-
+
       - run: npm rebuild node-sass
         working-directory: apps/block_scout_web/assets
-      - run: mix compile
-      - run: make
-        working-directory: "deps/libsecp256k1"
+
       - name: Build assets
         run: node node_modules/webpack/bin/webpack.js --mode development
         working-directory: "apps/block_scout_web/assets"
+
       - run: ./node_modules/.bin/jest
         working-directory: apps/block_scout_web/assets
+
   test_parity_mox_ethereum_jsonrpc:
+    name: EthereumJSONRPC Tests
     runs-on: ubuntu-18.04
+    needs: build-and-cache
     services:
       postgres:
         image: postgres
@@ -211,25 +338,22 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-elixir@v1
         with:
-          otp-version: '23.3.4.1'
-          elixir-version: '1.11.4'
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
       - run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
       - run: echo 'export PATH=~/.cargo/bin/:$PATH' >> $GITHUB_ENV
-      - run: mix local.hex --force
-      - run: mix local.rebar --force
-      - run: mix deps.get
-      - run: npm install
-        working-directory: apps/explorer
-      - run: npm install
-        working-directory: apps/block_scout_web/assets
-      - run: npm rebuild node-sass
-        working-directory: apps/block_scout_web/assets
-      - run: mix compile
-      - run: make
-        working-directory: "deps/libsecp256k1"
-      - name: Build assets
-        run: node node_modules/webpack/bin/webpack.js --mode development
-        working-directory: "apps/block_scout_web/assets"
+
+      - name: Mix Deps Cache
+        uses: actions/cache@v2
+        id: deps-cache
+        with:
+          path: | 
+            deps
+            _build
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
+
       - run: ./bin/install_chrome_headless.sh
       - name: mix test --exclude no_parity
         run: |
@@ -243,7 +367,9 @@ jobs:
           ETHEREUM_JSONRPC_CASE: "EthereumJSONRPC.Case.Parity.Mox"
           ETHEREUM_JSONRPC_WEB_SOCKET_CASE: "EthereumJSONRPC.WebSocket.Case.Mox"
   test_parity_mox_explorer:
+    name: Explorer Tests
     runs-on: ubuntu-18.04
+    needs: build-and-cache
     services:
       postgres:
         image: postgres
@@ -267,25 +393,31 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-elixir@v1
         with:
-          otp-version: '23.3.4.1'
-          elixir-version: '1.11.4'
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
       - run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
       - run: echo 'export PATH=~/.cargo/bin/:$PATH' >> $GITHUB_ENV
-      - run: mix local.hex --force
-      - run: mix local.rebar --force
-      - run: mix deps.get
-      - run: npm install
-        working-directory: apps/explorer
-      - run: npm install
-        working-directory: apps/block_scout_web/assets
-      - run: npm rebuild node-sass
-        working-directory: apps/block_scout_web/assets
-      - run: mix compile
-      - run: make
-        working-directory: "deps/libsecp256k1"
-      - name: Build assets
-        run: node node_modules/webpack/bin/webpack.js --mode development
-        working-directory: "apps/block_scout_web/assets"
+
+      - name: Mix Deps Cache
+        uses: actions/cache@v2
+        id: deps-cache
+        with:
+          path: | 
+            deps
+            _build
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
+
+      - name: Restore Explorer NPM Cache
+        uses: actions/cache@v2
+        id: explorer-npm-cache
+        with:
+          path: apps/explorer/node_modules
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-explorer-npm-${{ hashFiles('apps/explorer/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-explorer-npm
+
       - run: ./bin/install_chrome_headless.sh
       - name: mix test --exclude no_parity
         run: |
@@ -301,7 +433,9 @@ jobs:
           ETHEREUM_JSONRPC_CASE: "EthereumJSONRPC.Case.Parity.Mox"
           ETHEREUM_JSONRPC_WEB_SOCKET_CASE: "EthereumJSONRPC.WebSocket.Case.Mox"
   test_parity_mox_indexer:
+    name: Indexer Tests
     runs-on: ubuntu-18.04
+    needs: build-and-cache
     services:
       postgres:
         image: postgres
@@ -325,26 +459,25 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-elixir@v1
         with:
-          otp-version: '23.3.4.1'
-          elixir-version: '1.11.4'
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
       - run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
       - run: echo 'export PATH=~/.cargo/bin/:$PATH' >> $GITHUB_ENV
-      - run: mix local.hex --force
-      - run: mix local.rebar --force
-      - run: mix deps.get
-      - run: npm install
-        working-directory: apps/explorer
-      - run: npm install
-        working-directory: apps/block_scout_web/assets
-      - run: npm rebuild node-sass
-        working-directory: apps/block_scout_web/assets
-      - run: mix compile
-      - run: make
-        working-directory: "deps/libsecp256k1"
-      - name: Build assets
-        run: node node_modules/webpack/bin/webpack.js --mode development
-        working-directory: "apps/block_scout_web/assets"
+
+      - name: Mix Deps Cache
+        uses: actions/cache@v2
+        id: deps-cache
+        with:
+          path: | 
+            deps
+            _build
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
+
+
       - run: ./bin/install_chrome_headless.sh
+
       - name: mix test --exclude no_parity
         run: |
           mix ecto.create --quiet
@@ -358,8 +491,11 @@ jobs:
           PGUSER: postgres
           ETHEREUM_JSONRPC_CASE: "EthereumJSONRPC.Case.Parity.Mox"
           ETHEREUM_JSONRPC_WEB_SOCKET_CASE: "EthereumJSONRPC.WebSocket.Case.Mox"
+
   test_parity_mox_block_scout_web:
+    name: Blockscout Web Tests
     runs-on: ubuntu-18.04
+    needs: build-and-cache
     services:
       postgres:
         image: postgres
@@ -383,26 +519,50 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-elixir@v1
         with:
-          otp-version: '23.3.4.1'
-          elixir-version: '1.11.4'
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
       - run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
       - run: echo 'export PATH=~/.cargo/bin/:$PATH' >> $GITHUB_ENV
-      - run: mix local.hex --force
-      - run: mix local.rebar --force
-      - run: mix deps.get
-      - run: npm install
-        working-directory: apps/explorer
-      - run: npm install
-        working-directory: apps/block_scout_web/assets
+
+      - name: Mix Deps Cache
+        uses: actions/cache@v2
+        id: deps-cache
+        with:
+          path: | 
+            deps
+            _build
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
+
+
+      - name: Restore Explorer NPM Cache
+        uses: actions/cache@v2
+        id: explorer-npm-cache
+        with:
+          path: apps/explorer/node_modules
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-explorer-npm-${{ hashFiles('apps/explorer/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-explorer-npm-
+
+      - name: Restore Blockscout Web NPM Cache
+        uses: actions/cache@v2
+        id: blockscoutweb-npm-cache
+        with:
+          path: apps/block_scout_web/assets/node_modules
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-blockscoutweb-npm-${{ hashFiles('apps/block_scout_web/assets/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-blockscoutweb-npm-
+
       - run: npm rebuild node-sass
         working-directory: apps/block_scout_web/assets
-      - run: mix compile
-      - run: make
-        working-directory: "deps/libsecp256k1"
+
       - name: Build assets
         run: node node_modules/webpack/bin/webpack.js --mode development
         working-directory: "apps/block_scout_web/assets"
+
       - run: ./bin/install_chrome_headless.sh
+
       - name: mix test --exclude no_parity
         run: |
           mix ecto.create --quiet
diff --git a/apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/rolling_window.ex b/apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/rolling_window.ex
index c1de043499..0b2c6b9594 100644
--- a/apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/rolling_window.ex
+++ b/apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/rolling_window.ex
@@ -104,8 +104,6 @@ defmodule EthereumJSONRPC.RollingWindow do
 
   # Public for testing
   defp sweep(table, delete_match_spec, replace_match_spec) do
-    Logger.debug(fn -> "Sweeping windows" end)
-
     # Delete any rows where all windows empty
     :ets.match_delete(table, delete_match_spec)
 
diff --git a/mix.exs b/mix.exs
index 1f8c298d47..3afac9fb33 100644
--- a/mix.exs
+++ b/mix.exs
@@ -10,11 +10,7 @@ defmodule BlockScout.Mixfile do
       version: "2.0",
       apps_path: "apps",
       deps: deps(),
-      dialyzer: [
-        plt_add_deps: :transitive,
-        plt_add_apps: ~w(ex_unit mix)a,
-        ignore_warnings: ".dialyzer-ignore"
-      ],
+      dialyzer: dialyzer(),
       elixir: "~> 1.10",
       preferred_cli_env: [
         credo: :test,
@@ -36,6 +32,16 @@ defmodule BlockScout.Mixfile do
 
   ## Private Functions
 
+  defp dialyzer() do
+    [
+      plt_add_deps: :transitive,
+      plt_add_apps: ~w(ex_unit mix)a,
+      ignore_warnings: ".dialyzer-ignore",
+      plt_core_path: "priv/plts",
+      plt_file: {:no_warn, "priv/plts/dialyzer.plt"}
+    ]
+  end
+
   defp aliases(env) do
     [
       # to match behavior of `mix test` in `apps/indexer`, which needs to not start applications for `indexer` to