diff --git a/Project.toml b/Project.toml
index 5afdb483..ac34c07f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -43,7 +43,7 @@ JSON3 = "1.11.1"
 LinearAlgebra = "1.9"
 PDBTools = "1.8.1, 2"
 Plots = "1.39"
-PrecompileTools = "1"
+PrecompileTools = "1.2.1"
 Printf = "1.9"
 ProgressMeter = "1.10.1"
 Random = "1.9"