diff --git a/Project.toml b/Project.toml
index c6ec56e7..97bb403c 100644
--- a/Project.toml
+++ b/Project.toml
@@ -39,10 +39,10 @@ Atomix = "0.1"
 CEnum = "0.4, 0.5"
 ExprTools = "0.1"
 GPUArrays = "10"
-GPUCompiler = "0.26, 0.27"
+GPUCompiler = "0.27"
 KernelAbstractions = "0.9.2"
 LLD_jll = "15, 16, 17"
-LLVM = "8.1"
+LLVM = "9"
 LLVM_jll = "15, 16, 17"
 Preferences = "1"
 PrettyTables = "2"