diff --git a/Project.toml b/Project.toml
index fb83e4263a..d86475034a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -42,6 +42,7 @@ GPUCompiler = "0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 1"
 LLVM = "6.1, 7, 8, 9"
 LogExpFunctions = "0.3"
 ObjectFile = "0.4"
+PrecompileTools = "1"
 Preferences = "1.4"
 SparseArrays = "1"
 SpecialFunctions = "1, 2"