diff --git a/Cargo.lock b/Cargo.lock
index 220a303..7d15b58 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1007,9 +1007,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.2.2"
+version = "2.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "824b2ae422412366ba479e8111fd301f7b5faece8149317bb81925979a53f520"
+checksum = "233cf39063f058ea2caae4091bf4a3ef70a653afbc026f5c4a4135d114e3c177"
 dependencies = [
  "equivalent",
  "hashbrown 0.14.1",
diff --git a/progenitor-impl/Cargo.toml b/progenitor-impl/Cargo.toml
index e7f46b1..9dbbeef 100644
--- a/progenitor-impl/Cargo.toml
+++ b/progenitor-impl/Cargo.toml
@@ -11,7 +11,7 @@ readme = "../README.md"
 heck = "0.4.1"
 http = "0.2.9"
 getopts = "0.2"
-indexmap = "2.2.2"
+indexmap = "2.2.3"
 openapiv3 = "2.0.0"
 proc-macro2 = "1.0"
 quote = "1.0"