diff --git a/build-constraints.yaml b/build-constraints.yaml
index b346311f..903723ee 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1959,7 +1959,7 @@ packages:
     "Alexey Khudyakov <alexey.skladnoy@gmail.com> @Shimuuar":
         - histogram-fill
         - fixed-vector
-        # - fixed-vector-hetero # https://github.com/Shimuuar/fixed-vector-hetero/issues/3
+        - fixed-vector-hetero
         - type-level-numbers
 
     "Ryan Scott <ryan.gl.scott@gmail.com> @RyanGlScott":