diff --git a/Project.toml b/Project.toml
index 5cc5edec1..699998728 100644
--- a/Project.toml
+++ b/Project.toml
@@ -41,9 +41,9 @@ CEnum = "0.4, 0.5"
 CodecBzip2 = "0.8"
 ExprTools = "0.1"
 GPUArrays = "10.1"
-GPUCompiler = "0.26, 0.27"
+GPUCompiler = "0.27.4"
 KernelAbstractions = "0.9.1"
-LLVM = "7.2, 8, 9"
+LLVM = "9"
 LLVMDowngrader_jll = "0.3"
 ObjectFile = "0.4"
 ObjectiveC = "2.1, 3"