diff --git a/C/Cthulhu/Compat.toml b/C/Cthulhu/Compat.toml
index 663cf78be3d206b..d20a0073120ca28 100644
--- a/C/Cthulhu/Compat.toml
+++ b/C/Cthulhu/Compat.toml
@@ -30,18 +30,21 @@ Preferences = "1"
 ["2.7.9-2.8.13"]
 SnoopPrecompile = "1"
 
-["2.8-2"]
-JuliaSyntax = "0.3.2-0.3"
-
 ["2.8-2.8.1"]
 TypedSyntax = "1.0.2-1"
 
+["2.8-2.8.14"]
+JuliaSyntax = "0.3.2-0.3"
+
 ["2.8.10-2"]
 TypedSyntax = "1.1.7-1"
 
 ["2.8.14-2"]
 PrecompileTools = "1"
 
+["2.8.15-2"]
+JuliaSyntax = "0.4"
+
 ["2.8.2-2.8.9"]
 TypedSyntax = "1.0.6-1"
 
diff --git a/C/Cthulhu/Versions.toml b/C/Cthulhu/Versions.toml
index c4921a89ad31ade..a55af4bf34b6fea 100644
--- a/C/Cthulhu/Versions.toml
+++ b/C/Cthulhu/Versions.toml
@@ -228,3 +228,6 @@ git-tree-sha1 = "c0a1ee2a81539f438a3bfcf19c4ec0805d523a4d"
 
 ["2.8.14"]
 git-tree-sha1 = "4e396fa7a2f2570f02839e04be6af0744610dbc4"
+
+["2.8.15"]
+git-tree-sha1 = "aac06850ca054d0459ec212aed9788f60dbf79cf"