diff --git a/Project.toml b/Project.toml
index d9fb1cd29..aece07030 100644
--- a/Project.toml
+++ b/Project.toml
@@ -66,6 +66,7 @@ LinearAlgebra = "1.9"
 Logging = "1.9"
 MLStyle = "0.4"
 MetaGraphs = "0.7"
+PEG = "1"
 PrettyTables = "2"
 Random = "1.9"
 Reexport = "1"