diff --git a/build-constraints.yaml b/build-constraints.yaml
index 915ed4c2..5d6a8e62 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1835,7 +1835,7 @@ packages:
 
     "Kostiantyn Rybnikov <k-bx@k-bx.com> @k-bx":
         - protocol-buffers
-        # - hprotoc # haskell-src-exts
+        - hprotoc
         - protocol-buffers-descriptor
         - ekg-core
         - digits