diff --git a/.github/workflows/2019-ci.yml b/.github/workflows/2019-ci.yml
index 7b3b7a9..e11b5dc 100644
--- a/.github/workflows/2019-ci.yml
+++ b/.github/workflows/2019-ci.yml
@@ -6,7 +6,7 @@ on:
       - 2019/**
       - .github/workflows/2019*
 env:
-  PYTHON_VERSION: 3.10
+  PYTHON_VERSION: 3.10.15
   YEAR: 2019
 
 jobs:
diff --git a/.github/workflows/2024-ci.yml b/.github/workflows/2024-ci.yml
index 7d4751d..50a903e 100644
--- a/.github/workflows/2024-ci.yml
+++ b/.github/workflows/2024-ci.yml
@@ -6,7 +6,7 @@ on:
       - 2024/**
       - .github/workflows/2024*
 env:
-  PYTHON_VERSION: 3.10
+  PYTHON_VERSION: 3.10.15
   YEAR: 2024
 
 jobs: