diff --git a/build-constraints.yaml b/build-constraints.yaml
index 22d1e3b3..4ac2442b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1770,7 +1770,7 @@ packages:
         - misfortune
 
     "Timo von Holtz <tvh@tvholtz.de> @tvh":
-        # - haxl-amazonka  # https://github.com/tvh/haxl-amazonka/issues/1 (build failure)
+        - haxl-amazonka
         - hasql-migration
         - servant-JuicyPixels
 
@@ -2770,6 +2770,9 @@ packages:
         # https://github.com/eggzilla/RNAlien/issues/8
         - ClustalParser < 1.2
 
+        # https://github.com/tvh/haxl-amazonka/issues/1
+        - haxl < 0.5
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of