diff --git a/.github/workflows/runtests.yml b/.github/workflows/runtests.yml
index 5737e7f..1a023db 100644
--- a/.github/workflows/runtests.yml
+++ b/.github/workflows/runtests.yml
@@ -12,12 +12,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        julia-version: ['1.0', '1', 'nightly']
-        julia-arch: [x64, x86]
-        os: [ubuntu-latest, windows-latest, macOS-latest]
-        exclude:
-          - os: macOS-latest
-            julia-arch: x86
+        julia-version: ['1.9']
+        julia-arch: [x64]
+        os: [ubuntu-latest]
 
     steps:
       - uses: actions/checkout@v2