diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Revision history for tmp-proc-postgres
 
+## 0.5.2.3 -- 2023-07-12
+
+* Extend the version bounds of bytestring to allow 0.12
+
 ## 0.5.2.1 -- 2022-08-11
 
 * Relax version bounds
diff --git a/tmp-proc-postgres.cabal b/tmp-proc-postgres.cabal
--- a/tmp-proc-postgres.cabal
+++ b/tmp-proc-postgres.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               tmp-proc-postgres
-version:            0.5.2.2
+version:            0.5.2.3
 synopsis:           Shows how to run a PostgreSQL database as a tmp proc
 description:
   An example of using tmp-proc to launch dockerized PostgreSQL in integration tests.
@@ -30,7 +30,7 @@
   hs-source-dirs:   src
   build-depends:
     , base               >=4.11     && <5
-    , bytestring         >=0.10.8.2 && <0.12
+    , bytestring         >=0.10.8.2 && <0.12.1
     , postgresql-simple  >=0.5.4  && <0.7
     , text               >=1.2.3.0  && <1.3 || >=2.0 && <2.1
     , tmp-proc           >=0.5  && <0.6