diff --git a/build-constraints.yaml b/build-constraints.yaml
index 38731472..3af2f7f7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -281,7 +281,7 @@ packages:
         - kan-extensions
         - lca
         - lens
-        # GHC 8 - linear
+        - linear
         # GHC 8 - linear-accelerate
         # GHC 8 - log-domain
         # BLOCKED distributive 0.5 - machines
@@ -2357,21 +2357,15 @@ skipped-tests:
 
     # Too lazy to keep the test dependencies up to date
     - cases
-    - hasql-postgres
-    - list-t
-    - postgresql-binary
-    - slave-thread
-    - stm-containers
 
     # Just a temporary package with a flimsy, inherited test suite
     - Cabal-ide-backend
 
     # QuickCheck 2.8
-    - testpack
     - vector
+
+    # requires testpack - https://github.com/jgoerzen/testpack/issues/11
     - MissingH
-    # https://github.com/Soostone/retry/issues/30
-    - retry
 
     # doctest < 0.10
     # Closed due to inactivity: https://github.com/fpco/stackage/issues/622
@@ -2383,11 +2377,6 @@ skipped-tests:
     # https://github.com/kaizhang/clustering/issues/2
     - clustering
 
-    # tasty < 0.11
-    # Closed due to inactivity: https://github.com/fpco/stackage/issues/817
-    - uuid
-    - uuid-types
-
     # https://github.com/fpco/stackage/issues/934
     - cacophony
 
@@ -2443,7 +2432,6 @@ skipped-tests:
     # Closed due to inactivity: https://github.com/fpco/stackage/issues/1328
     - ad
     - composition-tree
-    # GHC 8 - linear
     # GHC 8 - patches-vector
     - semigroupoids
 
@@ -2459,9 +2447,6 @@ skipped-tests:
     - system-fileio
     - shelly
 
-    # doctest 0.11
-    - linear
-
 # end of skipped-tests
 
 # Tests which we should build and run, but which are expected to fail. We