diff --git a/build-constraints.yaml b/build-constraints.yaml
index af9b26c3..1624ea52 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3555,7 +3555,6 @@ packages:
         - mwc-random-accelerate < 0 # GHC 8.4 via base-4.11.0.0
         - naqsha < 0 # GHC 8.4 via base-4.11.0.0
         - network-carbon < 0 # GHC 8.4 via base-4.11.0.0
-        - newtype-generics < 0 # GHC 8.4 via base-4.11.0.0
         - numhask < 0 # GHC 8.4 via base-4.11.0.0
         - numhask-range < 0 # GHC 8.4 via base-4.11.0.0
         - palette < 0 # GHC 8.4 via base-4.11.0.0
@@ -3698,7 +3697,6 @@ packages:
         - mmark < 0 # GHC 8.4 via modern-uri
         - mmark-ext < 0 # GHC 8.4 via modern-uri
         - req-url-extra < 0 # GHC 8.4 via modern-uri
-        - MemoTrie < 0 # GHC 8.4 via newtype-generics
         - online < 0 # GHC 8.4 via numhask
         - plot-light < 0 # GHC 8.4 via palette
         - online < 0 # GHC 8.4 via perf
@@ -3791,7 +3789,6 @@ packages:
         - threepenny-gui-flexbox < 0 # GHC 8.4 via threepenny-gui
         - wai-middleware-throttle < 0 # GHC 8.4 via token-bucket
         - netwire-input-glfw < 0 # GHC 8.4 via GLFW-b
-        - vector-space < 0 # GHC 8.4 via MemoTrie
         - boltzmann-samplers < 0 # GHC 8.4 via ad
         - hamilton < 0 # GHC 8.4 via ad
         - matplotlib < 0 # GHC 8.4 via ad
@@ -4202,7 +4199,6 @@ packages:
         - pipes-text < 0 # GHC 8.4 via pipes-safe
         - wire-streams < 0 # GHC 8.4 via binary-parsers
         - wire-streams < 0 # GHC 8.4 via io-streams
-        - haskell-spacegoo < 0 # GHC 8.4 via vector-space
         - cryptohash-md5 < 0 # GHC 8.4 via base-4.11.0.0
         - cryptohash-sha1 < 0 # GHC 8.4 via base-4.11.0.0
         - hasql-migration < 0 # GHC 8.4 via hasql