diff --git a/Cargo.toml b/Cargo.toml
index 056d10d46..b33a8abe0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,7 +18,7 @@ num = "^0.4"
 num-derive = "^0.4"
 num-format = "^0.4"
 num-traits = "^0.2"
-petgraph = "^0.6"
+petgraph = "^0.7"
 regex = "^1.7"
 serde = { version = "^1.0", features = ["derive"] }
 termcolor = "^1.2"