diff --git a/build-constraints.yaml b/build-constraints.yaml
index 53c746c9..e7519095 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1033,7 +1033,7 @@ packages:
         - vectortiles < 0
 
     "Ketil Malde @ketil-malde":
-        - biocore < 0 # build failure with GHC 8.4 https://github.com/fpco/stackage/pull/3359
+        # - biocore # build failure with GHC 8.4 https://github.com/fpco/stackage/pull/3359
         # - biofasta # ghc 8.4 via biocore
         - biofastq < 0 # build failure with GHC 8.4
         # - blastxml # ghc 8.4 via biocore
@@ -1044,11 +1044,11 @@ packages:
         # - BlastHTTP # https://github.com/eggzilla/BlastHTTP/issues/1
 
     "Florian Eggenhofer <florian.eggenhofer@univie.ac.at> @eggzilla":
-        - ClustalParser
-        # - EntrezHTTP # fgl via graphviz via Taxonomy
+        # - ClustalParser
+        # - EntrezHTTP # graphviz via Taxonomy
         - Genbank < 0 # build failure with GHC 8.4
-        # - RNAlien # fgl via graphviz via Taxonomy
-        # - Taxonomy # fgl via graphviz
+        # - RNAlien # graphviz via Taxonomy
+        # - Taxonomy # graphviz
         - ViennaRNAParser
 
     "Silk <code@silk.co>":
@@ -3831,7 +3831,6 @@ packages:
         - stm-hamt < 0
 
         # failed to build
-        - ClustalParser < 0
         - Fin < 0
         - HPDF < 0
         - broadcast-chan < 0