diff --git a/Project.toml b/Project.toml
index 89199ab5..b0e9eab7 100644
--- a/Project.toml
+++ b/Project.toml
@@ -55,6 +55,7 @@ JSON3 = "1.9"
 JuliaSyntax = "0.2"
 LiveServer = "0.7, 0.8"
 ModuleInfo = "0.1"
+ThreadSafeDicts = "0.1"
 julia = "1"
 
 [pollen]