diff --git a/build-constraints.yaml b/build-constraints.yaml
index d2dbb83c..2e8c554a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3906,8 +3906,6 @@ packages:
         - herms < 0 # GHC 8.4 via vty
         - hledger-iadd < 0 # GHC 8.4 via vty
         - yi-frontend-vty < 0 # GHC 8.4 via vty
-        - web-routes-hsp < 0 # GHC 8.4 via web-routes
-        - web-routes-wai < 0 # GHC 8.4 via web-routes
         - xmonad-contrib < 0 # GHC 8.4 via xmonad
         - ipython-kernel < 0 # GHC 8.4 via zeromq4-haskell
         - HsOpenSSL-x509-system < 0 # GHC 8.4 via HsOpenSSL
@@ -3930,10 +3928,6 @@ packages:
         - hw-json < 0 # GHC 8.4 via hw-rankselect
         - hw-succinct < 0 # GHC 8.4 via hw-rankselect
         - H < 0 # GHC 8.4 via inline-r
-        - mysql-haskell-nem < 0 # GHC 8.4 via io-streams
-        - pdf-toolbox-content < 0 # GHC 8.4 via io-streams
-        - pdf-toolbox-core < 0 # GHC 8.4 via io-streams
-        - pdf-toolbox-document < 0 # GHC 8.4 via io-streams
         - result < 0 # GHC 8.4 via keys
         - astro < 0 # GHC 8.4 via matrix
         - general-games < 0 # GHC 8.4 via monad-loops
@@ -4038,12 +4032,6 @@ packages:
         - glib < 0 # GHC 8.4 via gtk2hs-buildtools
         - pango < 0 # GHC 8.4 via gtk2hs-buildtools
         - plot < 0 # GHC 8.4 via cairo
-        - cryptocipher < 0 # GHC 8.4 via cipher-blowfish
-        - cryptocipher < 0 # GHC 8.4 via cipher-camellia
-        - cryptocipher < 0 # GHC 8.4 via cipher-des
-        - cipher-rc4 < 0 # GHC 8.4 via crypto-cipher-tests
-        - cipher-rc4 < 0 # GHC 8.4 via crypto-cipher-types
-        - cryptocipher < 0 # GHC 8.4 via crypto-cipher-types
         - plot < 0 # GHC 8.4 via pango
         - cabal-toolkit < 0 # GHC 8.4 via Cabal-2.2.0.0