diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 459d7f8..9bd0aa2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        nim: [version-1-6, version-2-0, devel]
+        nim: [1.6.18, 2.0.2, devel]
     steps:
     - name: Checkout
       uses: actions/checkout@v4