diff --git a/Project.toml b/Project.toml
index f471a005..86078828 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "GPUCompiler"
 uuid = "61eb1bfa-7361-4325-ad38-22787b887f55"
-authors = ["Tim Besard <tim.besard@gmail.com>"]
 version = "1.5.1"
+authors = ["Tim Besard <tim.besard@gmail.com>"]
 
 [deps]
 ExprTools = "e2ba6199-217a-4e67-a87a-7c52f15ade04"
diff --git a/src/mangling.jl b/src/mangling.jl
index 0fc69165..2baefcb1 100644
--- a/src/mangling.jl
+++ b/src/mangling.jl
@@ -10,12 +10,16 @@ safe_name(fn::String) = replace(fn, r"[^A-Za-z0-9]"=>"_")
 safe_name(t::DataType) = safe_name(String(nameof(t)))
 function safe_name(t::Type{<:Function})
     # like Base.nameof, but for function types
-    mt = t.name.mt
-    fn = if mt === Symbol.name.mt
-        # uses shared method table, so name is not unique to this function type
-        nameof(t)
+    fn = if VERSION >= v"1.13.0-DEV.647"
+        t.name.singletonname
     else
-        mt.name
+        mt = t.name.mt
+        if mt === Symbol.name.mt
+            # uses shared method table, so name is not unique to this function type
+            nameof(t)
+        else
+            mt.name
+        end
     end
     safe_name(string(fn))
 end