diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,23 @@
 # Changelog
 
+## 0.15.0.0 — 2026-09-14
+
+Driven by the `pgmq-hs` 0.6 release. The adapter remains paired with `shibuya-core 0.9.0.0`,
+and its own public function and record signatures are unchanged.
+
+### Breaking Changes
+
+- Requires `pgmq-core ^>=0.6`, `pgmq-effectful ^>=0.6`, and `pgmq-hasql ^>=0.6` in the library,
+  plus `pgmq-migration ^>=0.6` in the test stanza, up from the 0.5 family. pgmq's own
+  `QueueMetrics` record gains a nullable `defaultPartitionLength` field, so applications that
+  construct that record directly must supply it.
+
+### Other Changes
+
+- Schema installation through `pgmq-migration` 0.6 now reaches PGMQ 1.13.0 (grouped-head reads,
+  partition premake, and default-partition metrics) via append-only migrations. Upgrading
+  preserves existing queue data.
+
 ## 0.14.0.0 — 2026-08-10
 
 This release adopts the application-defined dead-letter reason API from `shibuya-core` 0.9.
diff --git a/shibuya-pgmq-adapter.cabal b/shibuya-pgmq-adapter.cabal
--- a/shibuya-pgmq-adapter.cabal
+++ b/shibuya-pgmq-adapter.cabal
@@ -1,6 +1,6 @@
 cabal-version: 3.12
 name: shibuya-pgmq-adapter
-version: 0.14.0.0
+version: 0.15.0.0
 synopsis: PGMQ adapter for the Shibuya queue processing framework
 description:
   A Shibuya adapter that integrates with pgmq (PostgreSQL Message Queue)
@@ -46,9 +46,9 @@
     hasql ^>=1.10,
     hasql-pool ^>=1.4,
     hasql-transaction ^>=1.2,
-    pgmq-core ^>=0.5,
-    pgmq-effectful ^>=0.5,
-    pgmq-hasql ^>=0.5,
+    pgmq-core ^>=0.6,
+    pgmq-effectful ^>=0.6,
+    pgmq-hasql ^>=0.6,
     shibuya-core ^>=0.9.0.0,
     stm ^>=2.5,
     streamly ^>=0.11,
@@ -113,10 +113,10 @@
     hasql-transaction ^>=1.2,
     hspec ^>=2.11,
     pg-migrate ^>=1.1,
-    pgmq-core ^>=0.5,
-    pgmq-effectful ^>=0.5,
-    pgmq-hasql ^>=0.5,
-    pgmq-migration ^>=0.5,
+    pgmq-core ^>=0.6,
+    pgmq-effectful ^>=0.6,
+    pgmq-hasql ^>=0.6,
+    pgmq-migration ^>=0.6,
     quickcheck-instances ^>=0.3,
     random,
     shibuya-core ^>=0.9.0.0,