diff --git a/build-constraints.yaml b/build-constraints.yaml
index ea6fec5c..6d951c09 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -217,12 +217,11 @@ packages:
         # requires old haddock currently - haskell-docs
         # TODO: Add structured-haskell-mode once they've been ported to HSE 1.16.
 
-    # GHC 7.6
-    # "Alberto G. Corona <agocorona@gmail.com>":
-    #    - RefSerialize
-    #    - TCache
-    #    - Workflow
-    #    - MFlow
+    "Alberto G. Corona <agocorona@gmail.com>":
+        - RefSerialize
+        - TCache
+        - Workflow
+        - MFlow
 
     "Edward Kmett <ekmett@gmail.com>":
         - ad