diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 7781617f..ea181ba6 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -17,7 +17,9 @@ jobs:
       matrix:
         version:
           - '1.7'  # Lowest claimed support in Project.toml
-          - '1'    # Latest Release
+          # - '1'    # Latest Release  # Testing on 1.8 gives this message:
+          # ┌ Warning: ir verification broken. Either use 1.9 or 1.7
+          # └ @ Diffractor ~/work/Diffractor.jl/Diffractor.jl/src/stage1/recurse.jl:889
           - 'nightly'
         os:
           - ubuntu-latest