diff --git a/release.config.js b/release.config.js
index 3c5695cc..a14336c0 100644
--- a/release.config.js
+++ b/release.config.js
@@ -42,8 +42,8 @@ const config = {
                     "toml set --toml-path Cargo.toml package.version ${nextRelease.version}",
                     "toml set --toml-path tycho_simulation_py/Cargo.toml package.version ${nextRelease.version}",
                     "toml set --toml-path tycho_simulation_py/pyproject.toml project.version ${nextRelease.version}",
-                    "cargo update -p tycho_simulation",
-                    "cargo update -p _tycho_simulation_py",
+                    "cargo update -p tycho-simulation",
+                    "cargo update -p tycho-simulation-py",
                 ].join(" && "),
             },
         ],