diff --git a/build-constraints.yaml b/build-constraints.yaml
index 9b8272ac..c2375ebd 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1427,11 +1427,10 @@ packages:
         # GHC 8 - xml-conduit-parse
 
     "Kostiantyn Rybnikov <k-bx@k-bx.com> @k-bx":
-        # https://github.com/k-bx/protocol-buffers/issues/38
-        # GHC 8 - protocol-buffers
-        # GHC 8 - hprotoc
-        # GHC 8 - protocol-buffers-descriptor
-        # GHC 8 - ekg-core
+        - protocol-buffers
+        - hprotoc
+        - protocol-buffers-descriptor
+        - ekg-core
         - digits
         - hbeanstalk
         - iso3166-country-codes