diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0ca044b999..657681a305 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -189,7 +189,7 @@ jobs:
 
       - restore_cache:
           keys:
-            - v7-mix-dailyzer-{{ checksum "OTP_VERSION.lock" }}-{{ checksum "ELIXIR_VERSION.lock" }}-{{ checksum "mix.lock" }}
+            - v7-mix-dialyzer-{{ checksum "OTP_VERSION.lock" }}-{{ checksum "ELIXIR_VERSION.lock" }}-{{ checksum "mix.lock" }}
             - v7-mix-dialyzer-{{ checksum "OTP_VERSION.lock" }}-{{ checksum "ELIXIR_VERSION.lock" }}-{{ checksum "mix.exs" }}
             - v7-mix-dialyzer-{{ checksum "OTP_VERSION.lock" }}-{{ checksum "ELIXIR_VERSION.lock" }}
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index da3e1fb897..d5a8aa60b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
  - [#1654](https://github.com/poanetwork/blockscout/pull/1654) - add decompiled code tab
  - [#1661](https://github.com/poanetwork/blockscout/pull/1661) - try to compile smart contract with the latest evm version
  - [#1665](https://github.com/poanetwork/blockscout/pull/1665) - Add contract verification RPC endpoint.
+ - [#1706](https://github.com/poanetwork/blockscout/pull/1706) - allow setting update interval for addresses with b
 
 ### Fixes
 
@@ -16,9 +17,13 @@
  - [#1684](https://github.com/poanetwork/blockscout/pull/1684) - Discard child block with parent_hash not matching hash of imported block
  - [#1699](https://github.com/poanetwork/blockscout/pull/1699) - use seconds as transaction cache period measure
  - [#1697](https://github.com/poanetwork/blockscout/pull/1697) - fix failing in rpc if balance is empty
- 
+ - [#1711](https://github.com/poanetwork/blockscout/pull/1711) - rescue failing repo in block number cache update
+ - [#1714](https://github.com/poanetwork/blockscout/pull/1714) - fix average block time calculation
+
 ### Chore
 
+ - [#1693](https://github.com/poanetwork/blockscout/pull/1693) - Add a checklist to the PR template
+
 
 ## 1.3.8-beta
 
diff --git a/PULL_REQUEST_TEMPLATE.md b/PULL_REQUEST_TEMPLATE.md
index 03444118b9..3ac2a5a1d1 100644
--- a/PULL_REQUEST_TEMPLATE.md
+++ b/PULL_REQUEST_TEMPLATE.md
@@ -18,3 +18,20 @@
 ## Upgrading
 
 *If you have any Incompatible Changes in the above Changelog, outline how users of prior versions can upgrade once this PR lands or when reviewers are testing locally.  A common upgrading step is "Database reset and re-index required".*
+
+## Checklist for your PR
+
+<!--
+  Ideally a PR has all of the checkmarks set.
+
+  If something in this list is irrelevant to your PR, you should still set this
+  checkmark indicating that you are sure it is dealt with (be that by irrelevance).
+
+  If you don't set a checkmark (e. g. don't add a test for new functionality),
+  you must be able to justify that.
+-->
+
+  - [ ] I added an entry to `CHANGELOG.md` with this PR
+  - [ ] If I added new functionality, I added tests covering it.
+  - [ ] If I fixed a bug, I added a regression test to prevent the bug from silently reappearing again.
+  - [ ] I checked whether I should update the docs and did so if necessary
diff --git a/apps/block_scout_web/lib/block_scout_web/notifier.ex b/apps/block_scout_web/lib/block_scout_web/notifier.ex
index d1f538cf85..21a104848e 100644
--- a/apps/block_scout_web/lib/block_scout_web/notifier.ex
+++ b/apps/block_scout_web/lib/block_scout_web/notifier.ex
@@ -116,7 +116,7 @@ defmodule BlockScoutWeb.Notifier do
 
   defp broadcast_block(block) do
     preloaded_block = Repo.preload(block, [[miner: :names], :transactions, :rewards])
-    average_block_time = AverageBlockTime.average_block_time(preloaded_block)
+    average_block_time = AverageBlockTime.average_block_time()
 
     Endpoint.broadcast("blocks:new_block", "new_block", %{
       block: preloaded_block,
diff --git a/apps/explorer/config/config.exs b/apps/explorer/config/config.exs
index 2bf03ccd6b..dea1be2b46 100644
--- a/apps/explorer/config/config.exs
+++ b/apps/explorer/config/config.exs
@@ -13,7 +13,18 @@ config :explorer,
 
 config :explorer, Explorer.Counters.AverageBlockTime, enabled: true
 
-config :explorer, Explorer.Counters.AddressesWithBalanceCounter, enabled: true, enable_consolidation: true
+balances_update_interval =
+  if System.get_env("ADDRESS_WITH_BALANCES_UPDATE_INTERVAL") do
+    case Integer.parse(System.get_env("ADDRESS_WITH_BALANCES_UPDATE_INTERVAL")) do
+      {integer, ""} -> integer
+      _ -> nil
+    end
+  end
+
+config :explorer, Explorer.Counters.AddressesWithBalanceCounter,
+  enabled: true,
+  enable_consolidation: true,
+  update_interval_in_seconds: balances_update_interval || 30 * 60
 
 config :explorer, Explorer.ExchangeRates, enabled: true, store: :ets
 
diff --git a/apps/explorer/lib/explorer/chain/block_number_cache.ex b/apps/explorer/lib/explorer/chain/block_number_cache.ex
index e4e6219ebf..28d8d83e9c 100644
--- a/apps/explorer/lib/explorer/chain/block_number_cache.ex
+++ b/apps/explorer/lib/explorer/chain/block_number_cache.ex
@@ -61,7 +61,7 @@ defmodule Explorer.Chain.BlockNumberCache do
 
   defp update_cache do
     current_time = current_time()
-    {min, max} = Chain.fetch_min_and_max_block_numbers()
+    {min, max} = min_and_max_from_db()
     tuple = {min, max, current_time}
 
     :ets.insert(@tab, {@key, tuple})
@@ -85,6 +85,13 @@ defmodule Explorer.Chain.BlockNumberCache do
     cache_period
   end
 
+  defp min_and_max_from_db do
+    Chain.fetch_min_and_max_block_numbers()
+  rescue
+    _e ->
+      {0, 0}
+  end
+
   defp current_time do
     utc_now = DateTime.utc_now()
 
diff --git a/apps/explorer/lib/explorer/counters/addresses_with_balance_counter.ex b/apps/explorer/lib/explorer/counters/addresses_with_balance_counter.ex
index adbeb6e6f2..3a03a7bcd5 100644
--- a/apps/explorer/lib/explorer/counters/addresses_with_balance_counter.ex
+++ b/apps/explorer/lib/explorer/counters/addresses_with_balance_counter.ex
@@ -29,6 +29,8 @@ defmodule Explorer.Counters.AddressesWithBalanceCounter do
   config = Application.get_env(:explorer, Explorer.Counters.AddressesWithBalanceCounter)
   @enable_consolidation Keyword.get(config, :enable_consolidation)
 
+  @update_interval_in_seconds Keyword.get(config, :update_interval_in_seconds)
+
   @doc """
   Starts a process to periodically update the counter of the token holders.
   """
@@ -62,7 +64,7 @@ defmodule Explorer.Counters.AddressesWithBalanceCounter do
 
   defp schedule_next_consolidation do
     if enable_consolidation?() do
-      Process.send_after(self(), :consolidate, :timer.minutes(30))
+      Process.send_after(self(), :consolidate, :timer.seconds(@update_interval_in_seconds))
     end
   end
 
diff --git a/apps/explorer/lib/explorer/counters/average_block_time.ex b/apps/explorer/lib/explorer/counters/average_block_time.ex
index 11e26e266b..27a524c22a 100644
--- a/apps/explorer/lib/explorer/counters/average_block_time.ex
+++ b/apps/explorer/lib/explorer/counters/average_block_time.ex
@@ -11,6 +11,8 @@ defmodule Explorer.Counters.AverageBlockTime do
   alias Explorer.Repo
   alias Timex.Duration
 
+  @refresh_period 30 * 60 * 1_000
+
   @doc """
   Starts a process to periodically update the counter of the token holders.
   """
@@ -19,27 +21,51 @@ defmodule Explorer.Counters.AverageBlockTime do
     GenServer.start_link(__MODULE__, :ok, name: __MODULE__)
   end
 
-  def average_block_time(block \\ nil) do
+  def average_block_time do
     enabled? =
       :explorer
       |> Application.fetch_env!(__MODULE__)
       |> Keyword.fetch!(:enabled)
 
     if enabled? do
-      block = if block, do: {block.number, DateTime.to_unix(block.timestamp, :millisecond)}
-      GenServer.call(__MODULE__, {:average_block_time, block})
+      GenServer.call(__MODULE__, :average_block_time)
     else
       {:error, :disabled}
     end
   end
 
+  def refresh do
+    GenServer.call(__MODULE__, :refresh_timestamps)
+  end
+
   ## Server
   @impl true
   def init(_) do
+    Process.send_after(self(), :refresh_timestamps, @refresh_period)
+
+    {:ok, refresh_timestamps()}
+  end
+
+  @impl true
+  def handle_call(:average_block_time, _from, %{average: average} = state), do: {:reply, average, state}
+
+  @impl true
+  def handle_call(:refresh_timestamps, _, _) do
+    {:reply, :ok, refresh_timestamps()}
+  end
+
+  @impl true
+  def handle_info(:refresh_timestamps, _) do
+    Process.send_after(self(), :refresh_timestamps, @refresh_period)
+
+    {:noreply, refresh_timestamps()}
+  end
+
+  defp refresh_timestamps do
     timestamps_query =
       from(block in Block,
         limit: 100,
-        offset: 1,
+        offset: 0,
         order_by: [desc: block.number],
         select: {block.number, block.timestamp}
       )
@@ -51,30 +77,7 @@ defmodule Explorer.Counters.AverageBlockTime do
         {number, DateTime.to_unix(timestamp, :millisecond)}
       end)
 
-    {:ok, %{timestamps: timestamps, average: average_distance(timestamps)}}
-  end
-
-  @impl true
-  def handle_call({:average_block_time, nil}, _from, %{average: average} = state), do: {:reply, average, state}
-
-  def handle_call({:average_block_time, block}, _from, state) do
-    state = add_block(state, block)
-    {:reply, state.average, state}
-  end
-
-  # This is pretty naive, but we'll only ever be sorting 100 dates so I don't think
-  # complex logic is really necessary here.
-  defp add_block(%{timestamps: timestamps} = state, {new_number, _} = block) do
-    if Enum.any?(timestamps, fn {number, _} -> number == new_number end) do
-      state
-    else
-      timestamps =
-        [block | timestamps]
-        |> Enum.sort_by(fn {number, _} -> number end, &Kernel.>/2)
-        |> Enum.take(100)
-
-      %{state | timestamps: timestamps, average: average_distance(timestamps)}
-    end
+    %{timestamps: timestamps, average: average_distance(timestamps)}
   end
 
   defp average_distance([]), do: Duration.from_milliseconds(0)
diff --git a/apps/explorer/test/explorer/counters/average_block_time_test.exs b/apps/explorer/test/explorer/counters/average_block_time_test.exs
index 27ef74d551..63c47042c7 100644
--- a/apps/explorer/test/explorer/counters/average_block_time_test.exs
+++ b/apps/explorer/test/explorer/counters/average_block_time_test.exs
@@ -5,8 +5,6 @@ defmodule Explorer.Counters.AverageBlockTimeTest do
 
   alias Explorer.Counters.AverageBlockTime
 
-  defp block(number, last, duration), do: %{number: number, timestamp: Timex.shift(last, seconds: duration)}
-
   setup do
     start_supervised!(AverageBlockTime)
     Application.put_env(:explorer, AverageBlockTime, enabled: true)
@@ -26,41 +24,5 @@ defmodule Explorer.Counters.AverageBlockTimeTest do
     test "without blocks duration is 0" do
       assert AverageBlockTime.average_block_time() == Timex.Duration.parse!("PT0S")
     end
-
-    test "with only one block, the duration is 0" do
-      now = Timex.now()
-      block = block(0, now, 0)
-
-      assert AverageBlockTime.average_block_time(block) == Timex.Duration.parse!("PT0S")
-    end
-
-    test "once there are two blocks, the duration is the average distance between them all" do
-      now = Timex.now()
-
-      block0 = block(0, now, 0)
-      block1 = block(1, now, 2)
-      block2 = block(2, now, 6)
-
-      AverageBlockTime.average_block_time(block0)
-      assert AverageBlockTime.average_block_time(block1) == Timex.Duration.parse!("PT2S")
-      assert AverageBlockTime.average_block_time(block2) == Timex.Duration.parse!("PT3S")
-    end
-
-    test "only the last 100 blocks are considered" do
-      now = Timex.now()
-
-      block0 = block(0, now, 0)
-      block1 = block(1, now, 2000)
-
-      AverageBlockTime.average_block_time(block0)
-      AverageBlockTime.average_block_time(block1)
-
-      for i <- 1..100 do
-        block = block(i + 1, now, 2000 + i)
-        AverageBlockTime.average_block_time(block)
-      end
-
-      assert AverageBlockTime.average_block_time() == Timex.Duration.parse!("PT1S")
-    end
   end
 end
diff --git a/apps/indexer/lib/indexer/address_extraction.ex b/apps/indexer/lib/indexer/address_extraction.ex
index 0a4046a714..5fba0da10c 100644
--- a/apps/indexer/lib/indexer/address_extraction.ex
+++ b/apps/indexer/lib/indexer/address_extraction.ex
@@ -86,8 +86,7 @@ defmodule Indexer.AddressExtraction do
     transactions: [
       [
         %{from: :block_number, to: :fetched_coin_balance_block_number},
-        %{from: :created_contract_address_hash, to: :hash},
-        %{from: :input, to: :contract_code}
+        %{from: :created_contract_address_hash, to: :hash}
       ],
       [
         %{from: :block_number, to: :fetched_coin_balance_block_number},
diff --git a/apps/indexer/test/indexer/coin_balance/on_demand_fetcher_test.exs b/apps/indexer/test/indexer/coin_balance/on_demand_fetcher_test.exs
index 071493e28a..590ac6b7da 100644
--- a/apps/indexer/test/indexer/coin_balance/on_demand_fetcher_test.exs
+++ b/apps/indexer/test/indexer/coin_balance/on_demand_fetcher_test.exs
@@ -41,10 +41,9 @@ defmodule Indexer.CoinBalance.OnDemandFetcherTest do
 
       # we space these very far apart so that we know it will consider the 0th block stale (it calculates how far
       # back we'd need to go to get 24 hours in the past)
-      block_0 = insert(:block, number: 0, timestamp: Timex.shift(now, hours: -50))
-      AverageBlockTime.average_block_time(block_0)
-      block_1 = insert(:block, number: 1, timestamp: now)
-      AverageBlockTime.average_block_time(block_1)
+      insert(:block, number: 0, timestamp: Timex.shift(now, hours: -50))
+      insert(:block, number: 1, timestamp: now)
+      AverageBlockTime.refresh()
 
       stale_address = insert(:address, fetched_coin_balance: 1, fetched_coin_balance_block_number: 0)
       current_address = insert(:address, fetched_coin_balance: 1, fetched_coin_balance_block_number: 1)
@@ -89,10 +88,9 @@ defmodule Indexer.CoinBalance.OnDemandFetcherTest do
 
       # we space these very far apart so that we know it will consider the 0th block stale (it calculates how far
       # back we'd need to go to get 24 hours in the past)
-      block_0 = insert(:block, number: 0, timestamp: Timex.shift(now, hours: -50))
-      AverageBlockTime.average_block_time(block_0)
-      block_1 = insert(:block, number: 1, timestamp: now)
-      AverageBlockTime.average_block_time(block_1)
+      insert(:block, number: 0, timestamp: Timex.shift(now, hours: -50))
+      insert(:block, number: 1, timestamp: now)
+      AverageBlockTime.refresh()
 
       :ok
     end