diff --git a/crates/webidl/src/lib.rs b/crates/webidl/src/lib.rs
index 7394cb90d7e..07eb2c44e1a 100644
--- a/crates/webidl/src/lib.rs
+++ b/crates/webidl/src/lib.rs
@@ -196,6 +196,12 @@ fn immutable_slice_whitelist() -> BTreeSet<&'static str> {
         "uniformMatrix2fv",
         "uniformMatrix3fv",
         "uniformMatrix4fv",
+        "uniformMatrix2x3fv",
+        "uniformMatrix2x4fv",
+        "uniformMatrix3x2fv",
+        "uniformMatrix3x4fv",
+        "uniformMatrix4x2fv",
+        "uniformMatrix4x3fv",
         "vertexAttrib1fv",
         "vertexAttrib2fv",
         "vertexAttrib3fv",