diff --git a/Cargo.lock b/Cargo.lock
index 100ba91b6..a06eebccd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -395,12 +395,12 @@ dependencies = [
 
 [[package]]
 name = "petgraph"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4dd7d28ee937e54fe3080c91faa1c3a46c06de6252988a7f4592ba2310ef22a4"
+checksum = "e1d3afd2628e69da2be385eb6f2fd57c8ac7977ceeff6dc166ff1657b0e386a9"
 dependencies = [
  "fixedbitset",
- "indexmap 1.9.3",
+ "indexmap 2.0.0",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 0f9e770dc..1b230dd49 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,7 +30,7 @@ hashbrown = { version = ">=0.13, <0.15", features = ["rayon"] }
 indexmap = { version = ">=1.9, <3", features = ["rayon"] }
 num-traits = "0.2"
 numpy = "0.19.0"
-petgraph = "0.6.3"
+petgraph = "0.6.4"
 rand = "0.8"
 rand_pcg = "0.3"
 rayon = "1.7"