diff --git a/build-constraints.yaml b/build-constraints.yaml
index aa838fd8..923ea7cb 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -454,8 +454,7 @@ packages:
         - openpgp-asciiarmor
         - MusicBrainz
         - DAV
-        # https://github.com/fpco/stackage/issues/319
-        # - hopenpgp-tools
+        - hopenpgp-tools
 
     # https://github.com/fpco/stackage/issues/160
     "Ketil Malde":
@@ -625,7 +624,7 @@ packages:
 
     "Marcin Mrotek <marcin.jan.mrotek@gmail.com>":
         - type-list
-        
+
     "David Turner <dave.c.turner@gmail.com>":
         - alarmclock
         - bank-holidays-england