diff --git a/.github/workflows/parallel-support.yml b/.github/workflows/parallel-support.yml
index df9bbd55..93a871ca 100644
--- a/.github/workflows/parallel-support.yml
+++ b/.github/workflows/parallel-support.yml
@@ -36,7 +36,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.12", "3.13"]
+        python-version: ["3.13"]
         os: ["blacksmith-4vcpu-ubuntu-2204"]
 
     steps:
@@ -78,7 +78,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.12", "3.13"]
+        python-version: ["3.13"]
         os: ["blacksmith-4vcpu-ubuntu-2204"]
 
     steps: