diff --git a/Cargo.lock b/Cargo.lock
index 88a5a55..078cc0c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1021,9 +1021,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.2.5"
+version = "2.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b0b929d511467233429c45a44ac1dcaa21ba0f5ba11e4879e6ed28ddb4f9df4"
+checksum = "168fb715dda47215e360912c096649d23d58bf392ac62f73919e831745e40f26"
 dependencies = [
  "equivalent",
  "hashbrown",
diff --git a/progenitor-impl/Cargo.toml b/progenitor-impl/Cargo.toml
index 74829c3..142cbdc 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 = "2.2.5"
+indexmap = "2.2.6"
 openapiv3 = "2.0.0"
 proc-macro2 = "1.0"
 quote = "1.0"