diff --git a/build-constraints.yaml b/build-constraints.yaml
index 21cffd0f..a4718290 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3149,8 +3149,8 @@ packages:
         - javascript-extras
         - l10n
         - pipes-category
-        # pipes-fluid # blocked on pipes-misc
-        # pipes-misc # blocked due to https://github.com/fpco/stackage/issues/2946
+        - pipes-fluid # blocked on pipes-misc
+        - pipes-misc # blocked due to https://github.com/fpco/stackage/issues/2946
         - stm-extras
 
     "Siniša Biđin <sinisa@bidin.eu> @sbidin":
@@ -3421,9 +3421,6 @@ packages:
 
         # https://github.com/fpco/stackage/issues/2939
         - Glob < 0.9.0
-
-        # https://github.com/fpco/stackage/issues/2944
-        - pipes-category < 0.3.0.0
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of