diff --git a/overrides/default.nix b/overrides/default.nix
index 5f5130c48..851c29994 100644
--- a/overrides/default.nix
+++ b/overrides/default.nix
@@ -3296,6 +3296,7 @@ lib.composeManyExtensions [
             "0.19.1" = "sha256-qIXdoCEVGCGUnTicZp4bUTJyGpFy9dwWY03lXUbxiHg=";
             "0.20.0" = "sha256-5vbR2EbrAPJ8pb78tj/+r9nOWgQDT5aO/LUQI4kAGjU=";
             "0.20.1" = "sha256-vqJCGlp5S2wECfgleCexCb9xegA8b6wo7YNBbcsbXqk=";
+            "0.21.0" = "sha256-VOmMNEdKHrPKJzs+D735Y52y47MubPwLlfkvB7Glh14=";
           }.${version} or (
             lib.warn "Unknown rpds-py version: '${version}'. Please update getCargoHash." lib.fakeHash
           );