diff --git a/protobuf-parse/Cargo.toml b/protobuf-parse/Cargo.toml
index 2c94306d4..251a13b58 100644
--- a/protobuf-parse/Cargo.toml
+++ b/protobuf-parse/Cargo.toml
@@ -20,7 +20,7 @@ log       = "0.4"
 which     = "4.0"
 anyhow    = "1.0.53"
 thiserror = "1.0.30"
-indexmap  = "1.8.0"
+indexmap  = "2.0.0"
 
 protobuf = { path = "../protobuf", version = "=3.4.0" }
 protobuf-support = { path = "../protobuf-support", version = "=3.4.0" }