diff --git a/crates/uv-requirements/src/specification.rs b/crates/uv-requirements/src/specification.rs
index 67984a11b..80a3c35ea 100644
--- a/crates/uv-requirements/src/specification.rs
+++ b/crates/uv-requirements/src/specification.rs
@@ -397,12 +397,12 @@ impl RequirementsSpecification {
             }
             if !constraints.is_empty() {
                 return Err(anyhow::anyhow!(
-                    "Cannot specify additional requirements with a `pylock.toml` file"
+                    "Cannot specify constraints with a `pylock.toml` file"
                 ));
             }
             if !overrides.is_empty() {
                 return Err(anyhow::anyhow!(
-                    "Cannot specify constraints with a `pylock.toml` file"
+                    "Cannot specify overrides with a `pylock.toml` file"
                 ));
             }
 
diff --git a/crates/uv/tests/it/pip_install.rs b/crates/uv/tests/it/pip_install.rs
index 4d3312d68..1255a77a1 100644
--- a/crates/uv/tests/it/pip_install.rs
+++ b/crates/uv/tests/it/pip_install.rs
@@ -11442,7 +11442,7 @@ fn pep_751_mix() -> Result<()> {
     ----- stdout -----
 
     ----- stderr -----
-    error: Cannot specify additional requirements with a `pylock.toml` file
+    error: Cannot specify constraints with a `pylock.toml` file
     "
     );