diff --git a/.github/workflows/config.yml b/.github/workflows/config.yml
index 64c2cb8f80..318c79537f 100644
--- a/.github/workflows/config.yml
+++ b/.github/workflows/config.yml
@@ -26,7 +26,7 @@ env:
 jobs:
   build-and-cache:
     name: Build and Cache deps
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
       - uses: erlef/setup-beam@v1
@@ -47,7 +47,7 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-
 
@@ -91,7 +91,7 @@ jobs:
 
   credo:
     name: Credo
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
@@ -107,7 +107,7 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
 
@@ -115,7 +115,7 @@ jobs:
 
   check_formatted:
     name: Code formatting checks
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
@@ -131,14 +131,14 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ 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-latest
+    runs-on: ubuntu-20.04
     needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
@@ -154,7 +154,7 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
 
@@ -163,7 +163,7 @@ jobs:
         id: dialyzer-cache
         with:
           path: priv/plts
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-dialyzer-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-dialyzer-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-dialyzer-"
 
@@ -178,7 +178,7 @@ jobs:
 
   gettext:
     name: Missing translation keys check
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
@@ -194,7 +194,7 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
 
@@ -204,7 +204,7 @@ jobs:
         working-directory: "apps/block_scout_web"
   sobelow:
     name: Sobelow security analysis
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
@@ -220,7 +220,7 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
 
@@ -233,7 +233,7 @@ jobs:
 
   cspell:
     name: Check spelling
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
@@ -249,7 +249,7 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
 
@@ -281,7 +281,7 @@ jobs:
 
   eslint:
     name: ESLint
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
@@ -297,7 +297,7 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
 
@@ -327,7 +327,7 @@ jobs:
         working-directory: apps/block_scout_web/assets
   jest:
     name: JS Tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: build-and-cache
     steps:
       - uses: actions/checkout@v2
@@ -343,7 +343,7 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
 
@@ -365,7 +365,7 @@ jobs:
 
   test_nethermind_mox_ethereum_jsonrpc:
     name: EthereumJSONRPC Tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: build-and-cache
     services:
       postgres:
@@ -400,7 +400,7 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
 
@@ -419,7 +419,7 @@ jobs:
           ETHEREUM_JSONRPC_WEB_SOCKET_CASE: "EthereumJSONRPC.WebSocket.Case.Mox"
   test_nethermind_mox_explorer:
     name: Explorer Tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: build-and-cache
     services:
       postgres:
@@ -454,7 +454,7 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
 
@@ -484,7 +484,7 @@ jobs:
           ETHEREUM_JSONRPC_WEB_SOCKET_CASE: "EthereumJSONRPC.WebSocket.Case.Mox"
   test_nethermind_mox_indexer:
     name: Indexer Tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: build-and-cache
     services:
       postgres:
@@ -519,7 +519,7 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"
 
@@ -543,7 +543,7 @@ jobs:
 
   test_nethermind_mox_block_scout_web:
     name: Blockscout Web Tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: build-and-cache
     services:
       redis_db:
@@ -583,7 +583,7 @@ jobs:
           path: |
             deps
             _build
-          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_20-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash_21-${{ hashFiles('mix.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-"