diff --git a/Cargo.lock b/Cargo.lock
index fe7962a..6a62818 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -633,9 +633,9 @@ checksum = "db0d4cf898abf0081f964436dc980e96670a0f36863e4b83aaacdb65c9d7ccc3"
 
 [[package]]
 name = "heck"
-version = "0.4.0"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2540771e65fc8cb83cd6e8a237f70c319bd5c29f78ed1084ba5d50eeac86f7f9"
+checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
 
 [[package]]
 name = "hermit-abi"
diff --git a/progenitor-impl/Cargo.toml b/progenitor-impl/Cargo.toml
index adff765..5a2a248 100644
--- a/progenitor-impl/Cargo.toml
+++ b/progenitor-impl/Cargo.toml
@@ -8,7 +8,7 @@ repository = "https://github.com/oxidecomputer/progenitor.git"
 readme = "../README.md"
 
 [dependencies]
-heck = "0.4.0"
+heck = "0.4.1"
 getopts = "0.2"
 indexmap = "1.9"
 openapiv3 = "1.0.0"