diff --git a/build-constraints.yaml b/build-constraints.yaml
index c79a35f2..fe66aa0d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -998,7 +998,7 @@ packages:
         - redis-resp
         - redis-io
         - swagger
-        # - tinylog # build failure with ghc 8.4 https://gitlab.com/twittner/tinylog/issues/1
+        - tinylog
         - wai-predicates
         - wai-routing
         - zeromq4-haskell
@@ -3318,7 +3318,6 @@ packages:
         - reroute < 0 # build faiulre with GHC 8.4 https://github.com/agrafix/Spock/issues/140
         - riak < 0 # build failure with GHC 8.4 https://github.com/riak-haskell-client/riak-haskell-client/issues/105
         - text-format < 0 # build failure with GHC 8.4 https://github.com/bos/text-format/issues/22
-        - tinylog < 0 # build failure with GHC 8.4 https://gitlab.com/twittner/tinylog/issues/1
         - type-combinators < 0 # build failure with GHC 8.4 https://github.com/kylcarte/type-combinators/issues/8
         - vhd < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - wl-pprint-text < 0 # build failure with GHC 8.4 https://github.com/ivan-m/wl-pprint-text/issues/18