diff --git a/build-constraints.yaml b/build-constraints.yaml
index 438c1a44..73042490 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8,7 +8,7 @@ cabal-format-version: "1.24"
 # Constraints for brand new builds
 packages:
     "Olaf Chitil <oc@kent.ac.uk> @OlafChitil":
-        - fpretty
+        []
 
     "Maarten Faddegon <stackage@maartenfaddegon.nl> @MaartenFaddegon":
         - libgraph
@@ -1882,6 +1882,7 @@ packages:
     "koral koral@mailoo.org @k0ral":
         - atom-conduit
         - conduit-parse
+        - dublincore-xml-conduit
         - opml-conduit
         - rss-conduit < 0 # test runtime failure
         - imm < 0 # compilation failure via synthesizer-core
@@ -1910,7 +1911,6 @@ packages:
         - pipes-fastx
         # - pipes-illumina # via: pipes-bgzf
         - seqalign
-        - thermonuc
         - xlsior < 0 # compilation failure https://github.com/eurekagenomics/xlsior/issues/3
 
     "John Lenz <wuzzeb@gmail.com> @wuzzeb":
@@ -2076,7 +2076,7 @@ packages:
         # - euphoria # GHC 8.2.1
 
     "Ashley Moni ashley.moni1@gmail.com @AshleyMoni":
-        - quadtree
+        []
 
     "Brian Lewis brian@lorf.org @bsl":
         []
@@ -2144,7 +2144,6 @@ packages:
 
     "Dmitry Ivanov <ethercrow@gmail.com> @ethercrow":
         - charsetdetect-ae
-        - compiler-errors
         - docopt
         - dynamic-state
         - dyre
@@ -2812,9 +2811,8 @@ packages:
         - directory-tree
 
     "Ian Grant Jeffries <ian@housejeffries.com> @seagreen":
-        []
-        # - hjsonpointer # GHC 8.2.1
-        # - hjsonschema # GHC 8.2.1
+        - hjsonpointer
+        - hjsonschema
 
     "Drew Hess <src@drewhess.com> @dhess":
         - hpio
@@ -3017,7 +3015,6 @@ packages:
         - tce-conf
 
     "Jonathan Fischoff <jonathangfischoff@gmail.com>":
-        - threads-extra
         - clock-extras
         - next-ref
         - tmp-postgres