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 6f6985c..f31f37b 100644
--- a/src/Libtask.jl
+++ b/src/Libtask.jl
@@ -11,7 +11,11 @@ export TArray, tzeros, tfill, TRef # legacy types back compat
 const TypedSlot = @static if isdefined(Core, :TypedSlot) # Julia v1.10 removed Core.TypedSlot
     Core.TypedSlot
 else
-    Core.Compiler.TypedSlot
+    if isdefined(Core.Compiler, :TypedSlot) # Julia 1.11 removed Core.Compiler.TypedSlot
+        Core.Compiler.TypedSlot
+    else
+        Any
+    end
 end
 
 include("tapedfunction.jl")
diff --git a/src/tapedfunction.jl b/src/tapedfunction.jl
index e5eeef2..e36e650 100644
--- a/src/tapedfunction.jl
+++ b/src/tapedfunction.jl
@@ -285,9 +285,11 @@ function bind_var!(var::QuoteNode, bindings::Bindings, ir::Core.CodeInfo)
     LOGGING[] && @info "evaluating QuoteNode $var at compile time"
     bind_var!(eval(var), bindings, ir)
 end
-function bind_var!(var::TypedSlot, bindings::Bindings, ir::Core.CodeInfo)
-    # turn TypedSlot to SlotNumber
-    bind_var!(Core.SlotNumber(var.id), bindings, ir)
+@static if TypedSlot !== Any
+    function bind_var!(var::TypedSlot, bindings::Bindings, ir::Core.CodeInfo)
+        # turn TypedSlot to SlotNumber
+        bind_var!(Core.SlotNumber(var.id), bindings, ir)
+    end
 end
 function bind_var!(var::Core.SlotNumber, bindings::Bindings, ir::Core.CodeInfo)
     get!(bindings[1], var, allocate_binding!(var, bindings, ir.slottypes[var.id]))