diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1bf30d848..a68b44673 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,9 @@
 
+## 2.3.1
+
+*   Relax the `http-client-tls` upper bound to allow `0.4.*`.
+    [#7966](https://github.com/commercialhaskell/stackage/issues/7966)
+
 ## 2.3.0
 
 *   Change the `observeAndSample` function from the
diff --git a/prometheus.cabal b/prometheus.cabal
index 4cfce28a0..052e6c68a 100644
--- a/prometheus.cabal
+++ b/prometheus.cabal
@@ -1,5 +1,5 @@
 name:                prometheus
-version:             2.3.0
+version:             2.3.1
 synopsis:            Prometheus Haskell Client
 homepage:            http://github.com/bitnomial/prometheus
 bug-reports:         http://github.com/bitnomial/prometheus/issues
@@ -93,7 +93,7 @@ library
                , bytestring      >= 0.10 && < 0.13
                , containers      >= 0.5  && < 0.8
                , http-client     >= 0.4  && < 0.8
-               , http-client-tls >= 0.3  && < 0.4
+               , http-client-tls >= 0.3  && < 0.5
                , http-types      >= 0.8  && < 0.13
                , network-uri     >= 2.5  && < 2.7
                , text            >= 1.2  && < 2.2