diff --git a/build-constraints.yaml b/build-constraints.yaml
index 730a210ad..dd17e1e81 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8373,8 +8373,6 @@ packages:
         - type-level-show < 0 # tried type-level-show-0.3.0, but its *library* requires the disabled package: defun-core
         - type-natural < 0 # tried type-natural-1.3.0.1, but its *library* requires the disabled package: ghc-typelits-presburger
         - type-operators < 0 # tried type-operators-0.2.0.0, but its *library* requires base >=4.7 && < 4.17 and the snapshot contains base-4.20.0.0
-        - tz < 0 # tried tz-0.1.3.6, but its *library* requires template-haskell >=2.6 && < 2.22 and the snapshot contains template-haskell-2.22.0.0
-        - tztime < 0 # tried tztime-0.1.1.0, but its *library* requires the disabled package: tz
         - unfoldable < 0 # tried unfoldable-1.0.1, but its *library* requires containers >=0.5 && < 0.7 and the snapshot contains containers-0.7
         - unfoldable < 0 # tried unfoldable-1.0.1, but its *library* requires transformers >=0.4 && < 0.6 and the snapshot contains transformers-0.6.1.1
         - unfoldable-restricted < 0 # tried unfoldable-restricted-0.0.3, but its *library* requires the disabled package: unfoldable