diff --git a/build-constraints.yaml b/build-constraints.yaml
index 09d5e757..641ddbaa 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4686,8 +4686,6 @@ packages:
         - bencode < 0 # via base-4.13.0.0
         - boolean-normal-forms < 0 # via base-4.13.0.0
         - brick < 0 # via base-4.13.0.0
-        - brittany < 0 # via base-4.13.0.0
-        - butcher < 0 # via base-4.13.0.0
         - bzlib < 0 # via base-4.13.0.0
         - cabal-install < 0 # via base-4.13.0.0
         - cborg-json < 0 # via base-4.13.0.0
@@ -4701,7 +4699,6 @@ packages:
         - crypto-enigma < 0 # via base-4.13.0.0
         - css-syntax < 0 # via base-4.13.0.0
         - cyclotomic < 0 # via base-4.13.0.0
-        - data-tree-print < 0 # via base-4.13.0.0
         - dbus < 0 # via base-4.13.0.0
         - derulo < 0 # via base-4.13.0.0
         - diagrams-contrib < 0 # via base-4.13.0.0
@@ -4867,15 +4864,12 @@ packages:
         - hw-packed-vector < 0 # via generic-lens-1.2.0.0
         - hw-rankselect < 0 # via generic-lens-1.2.0.0
         - apply-refact < 0 # via ghc-8.8.1
-        - brittany < 0 # via ghc-8.8.1
         - ghc-parser < 0 # via ghc-8.8.1
         - hint < 0 # via ghc-8.8.1
         - ihaskell < 0 # via ghc-8.8.1
         - loopbreaker < 0 # via ghc-8.8.1
         - hsdev < 0 # via ghc-boot-8.8.1
         - ihaskell < 0 # via ghc-boot-8.8.1
-        - brittany < 0 # via ghc-boot-th-8.8.1
-        - brittany < 0 # via ghc-exactprint-0.6.2
         - gi-gtk-hs < 0 # via gi-gdk-4.0.1
         - gi-gtksource < 0 # via gi-gdk-4.0.1
         - gi-vte < 0 # via gi-gdk-4.0.1
@@ -6714,9 +6708,6 @@ expected-test-failures:
     # https://github.com/commercialhaskell/stackage/issues/4810
     - dns
 
-    # https://github.com/commercialhaskell/stackage/issues/4815
-    - brittany
-
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run