diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index d4cfaf1ea..ade9958cc 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -160,7 +160,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.8", "3.9", "3.10", "3.11", "3.12" ]
+        python-version: ${{ github.event_name == 'pull_request' && ["3.10", "3.12"] || ["3.8", "3.9", "3.10", "3.11", "3.12"] }}
     env:
       LEDGER_PROXY_ADDRESS: 127.0.0.1
       LEDGER_PROXY_PORT: 9999
@@ -337,7 +337,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.8", "3.9", "3.10", "3.11", "3.12" ]
+        python-version: ${{ github.event_name == 'pull_request' && ["3.10", "3.12"] || ["3.8", "3.9", "3.10", "3.11", "3.12"] }}
     env:
       SEPOLIA_RPC_URL: ${{ secrets.SEPOLIA_RPC_URL }}
     steps:
@@ -419,7 +419,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.8", "3.9", "3.10", "3.11", "3.12" ]
+        python-version: ${{ github.event_name == 'pull_request' && ["3.10", "3.12"] || ["3.8", "3.9", "3.10", "3.11", "3.12"] }}
     steps:
       - uses: actions/checkout@v4
 
@@ -483,7 +483,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.8", "3.9", "3.10", "3.11", "3.12" ]
+        python-version: ${{ github.event_name == 'pull_request' && ["3.10", "3.12"] || ["3.8", "3.9", "3.10", "3.11", "3.12"] }}
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@dc6353516c68da0f06325f42ad880f76a5e77ec9