diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 07d44e3..9f8587e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -18,9 +18,9 @@ jobs:
         - ubuntu-latest
         #-macos-latest
         #-windows-latest
-        resolver:
+        #resolver:
         #- nightly
-        - lts-18.7
+        #- lts-18.7
 
     steps:
       - name: Clone project
@@ -33,4 +33,4 @@ jobs:
             mkdir -p ../_newstack
             stack upgrade --force-download --local-bin-path ../_newstack
             ../_newstack/stack --version
-            ../_newstack/stack test --fast --no-terminal --resolver=${{ matrix.resolver }}
+            ../_newstack/stack test --fast --no-terminal