diff --git a/Project.toml b/Project.toml
index 4bbb3a1f..c91c1369 100644
--- a/Project.toml
+++ b/Project.toml
@@ -30,7 +30,7 @@ Measurements = "2.11"
 NearestNeighbors = "0.4.16"
 PDBTools = "2"
 Parameters = "0.12"
-PrecompileTools = "1"
+PrecompileTools = "1.2.1"
 ProgressMeter = "1.6"
 Random = "1.9"
 Setfield = "0.7, 0.8, 0.9, 1"