diff --git a/.github/workflows/regression-tests.yml b/.github/workflows/regression-tests.yml
index 90acb803..5b147815 100644
--- a/.github/workflows/regression-tests.yml
+++ b/.github/workflows/regression-tests.yml
@@ -36,12 +36,19 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        python-version: ['3.10', '3.11', '3.12', '3.13']
         include:
+          - sim: icarus
+            python-version: '3.10'
+
           - sim: icarus
             python-version: '3.11'
 
           - sim: icarus
-            python-version: '3.10'
+            python-version: '3.12'
+
+          - sim: icarus
+            python-version: '3.13'
 
           - sim: verilator
             sim-version: 5.044