diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2c1ef96..27a8afe 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        nim: [stable, 1.6.14]
+        nim: [stable, 1.6.18]
         os: [ubuntu-latest, macOS-latest, windows-latest]
     steps:
     - uses: actions/checkout@v2