diff --git a/crates/uv-pypi-types/src/metadata/metadata_resolver.rs b/crates/uv-pypi-types/src/metadata/metadata_resolver.rs
index 912008e6c7a6f..daebbda6b82b4 100644
--- a/crates/uv-pypi-types/src/metadata/metadata_resolver.rs
+++ b/crates/uv-pypi-types/src/metadata/metadata_resolver.rs
@@ -79,7 +79,7 @@ impl ResolutionMetadata {
             .collect::<Box<_>>();
         let dynamic = headers
             .get_all_values("Dynamic")
-            .any(|field| field.eq_ignore_ascii_case("Version"));
+            .any(|field| field == "Version");
 
         Ok(Self {
             name,
@@ -112,15 +112,12 @@ impl ResolutionMetadata {
         // If any of the fields we need are marked as dynamic, we can't use the `PKG-INFO` file.
         let mut dynamic = false;
         for field in headers.get_all_values("Dynamic") {
-            let field = field.as_str();
-            if field.eq_ignore_ascii_case("Requires-Python") {
-                return Err(MetadataError::DynamicField("Requires-Python"));
-            } else if field.eq_ignore_ascii_case("Requires-Dist") {
-                return Err(MetadataError::DynamicField("Requires-Dist"));
-            } else if field.eq_ignore_ascii_case("Provides-Extra") {
-                return Err(MetadataError::DynamicField("Provides-Extra"));
-            } else if field.eq_ignore_ascii_case("Version") {
-                dynamic = true;
+            match field.as_str() {
+                "Requires-Python" => return Err(MetadataError::DynamicField("Requires-Python")),
+                "Requires-Dist" => return Err(MetadataError::DynamicField("Requires-Dist")),
+                "Provides-Extra" => return Err(MetadataError::DynamicField("Provides-Extra")),
+                "Version" => dynamic = true,
+                _ => (),
             }
         }
 
@@ -337,25 +334,6 @@ mod tests {
         let meta = ResolutionMetadata::parse_pkg_info(s.as_bytes()).unwrap_err();
         assert!(matches!(meta, MetadataError::DynamicField("Requires-Dist")));
 
-        // Dynamic field values should be matched case-insensitively.
-        let s = "Metadata-Version: 2.3\nName: asdf\nVersion: 1.0\nDynamic: requires-dist";
-        let meta = ResolutionMetadata::parse_pkg_info(s.as_bytes()).unwrap_err();
-        assert!(matches!(meta, MetadataError::DynamicField("Requires-Dist")));
-
-        let s = "Metadata-Version: 2.3\nName: asdf\nVersion: 1.0\nDynamic: requires-python";
-        let meta = ResolutionMetadata::parse_pkg_info(s.as_bytes()).unwrap_err();
-        assert!(matches!(
-            meta,
-            MetadataError::DynamicField("Requires-Python")
-        ));
-
-        let s = "Metadata-Version: 2.3\nName: asdf\nVersion: 1.0\nDynamic: provides-extra";
-        let meta = ResolutionMetadata::parse_pkg_info(s.as_bytes()).unwrap_err();
-        assert!(matches!(
-            meta,
-            MetadataError::DynamicField("Provides-Extra")
-        ));
-
         let s = "Metadata-Version: 2.3\nName: asdf\nVersion: 1.0\nRequires-Dist: foo";
         let meta = ResolutionMetadata::parse_pkg_info(s.as_bytes()).unwrap();
         assert_eq!(meta.name, PackageName::from_str("asdf").unwrap());