diff --git a/primitives/contrib/test_vars.sh b/primitives/contrib/test_vars.sh
index 8bb284700..b81461161 100644
--- a/primitives/contrib/test_vars.sh
+++ b/primitives/contrib/test_vars.sh
@@ -5,10 +5,10 @@
 # shellcheck disable=SC2034
 
 # Test these features with "std" enabled.
-FEATURES_WITH_STD="serde"
+FEATURES_WITH_STD="ordered serde"
 
 # Test these features without "std" enabled.
-FEATURES_WITHOUT_STD="alloc serde"
+FEATURES_WITHOUT_STD="alloc ordered serde"
 
 # Run these examples.
 EXAMPLES=""