diff --git a/.github/workflows/Testing.yaml b/.github/workflows/Testing.yaml
index 48d03b6..224c879 100644
--- a/.github/workflows/Testing.yaml
+++ b/.github/workflows/Testing.yaml
@@ -13,6 +13,7 @@ jobs:
         version:
           - '1.7'
           - '1'
+          - '1.11.1'
           - 'nightly'
         os:
           - ubuntu-latest
diff --git a/src/Libtask.jl b/src/Libtask.jl
index ac349a8..1c6c676 100644
--- a/src/Libtask.jl
+++ b/src/Libtask.jl
@@ -10,6 +10,7 @@ export TArray, tzeros, tfill, TRef # legacy types back compat
 
 @static if isdefined(Core, :TypedSlot) || isdefined(Core.Compiler, :TypedSlot)
     # Julia v1.10 removed Core.TypedSlot
+    # Julia v1.11 removed Core.Compiler.TypedSlot
     const TypedSlot = @static if isdefined(Core, :TypedSlot)
         Core.TypedSlot
     else