diff --git a/conformance/BUILD.bazel b/conformance/BUILD.bazel
index cdb8d6df..12e3ff03 100644
--- a/conformance/BUILD.bazel
+++ b/conformance/BUILD.bazel
@@ -19,6 +19,7 @@ _ALL_TESTS = [
     "@dev_cel_expr//tests/simple:testdata/lists.textproto",
     "@dev_cel_expr//tests/simple:testdata/logic.textproto",
     "@dev_cel_expr//tests/simple:testdata/macros.textproto",
+    "@dev_cel_expr//tests/simple:testdata/macros2.textproto",
     "@dev_cel_expr//tests/simple:testdata/math_ext.textproto",
     "@dev_cel_expr//tests/simple:testdata/namespace.textproto",
     "@dev_cel_expr//tests/simple:testdata/optionals.textproto",
diff --git a/conformance/conformance_test.go b/conformance/conformance_test.go
index 4b37ea2e..41731028 100644
--- a/conformance/conformance_test.go
+++ b/conformance/conformance_test.go
@@ -91,6 +91,7 @@ func init() {
 		ext.Math(),
 		ext.Protos(),
 		ext.Strings(),
+		ext.TwoVarComprehensions(),
 		cel.Lib(celBlockLib{}),
 		cel.EnableIdentifierEscapeSyntax(),
 	}