diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## 0.5.2.0 — 2026-08-31
+
+### Changed
+
+- Moved to the Keiro 0.15 cohort: `keiro ^>=0.15.0.0` and `keiro-core ^>=0.15.0.0`.
+  Keiro 0.15.0.0's only breaking change is in `keiro-dsl`, which this package does not
+  depend on; `keiro` and `keiro-core` are republished at the shared lockstep version with
+  no source change. `keiki`, `kiroku-store`, `shibuya-core`, and `shibuya-kiroku-adapter`
+  keep their existing bounds, because Keiro 0.15.0.0 requires the same versions of them
+  that 0.14.0.0 did. This is a bounds-only change: no source changed and this package's
+  API is unchanged.
+
 ## 0.5.1.0 — 2026-08-29
 
 ### Changed
diff --git a/kioku-core.cabal b/kioku-core.cabal
--- a/kioku-core.cabal
+++ b/kioku-core.cabal
@@ -1,6 +1,6 @@
 cabal-version:   3.0
 name:            kioku-core
-version:         0.5.1.0
+version:         0.5.2.0
 synopsis:        Reusable agent memory runtime
 description:
   Core runtime for kioku. M1 establishes the application effect stack; later
@@ -125,9 +125,9 @@
     , hasql-transaction       >=1.0       && <1.3
     , hs-opentelemetry-api    >=1.0       && <1.1
     , keiki                   ^>=0.9.0.0
-    , keiro                   ^>=0.14.0.0
-    , keiro-core              ^>=0.14.0.0
-    , kioku-api               ^>=0.5.1.0
+    , keiro                   ^>=0.15.0.0
+    , keiro-core              ^>=0.15.0.0
+    , kioku-api               ^>=0.5.2.0
     , kiroku-store            ^>=0.8.0.0
     , lens                    >=5.2       && <5.4
     , mmzk-typeid             >=0.7       && <0.8
@@ -184,11 +184,11 @@
     , filepath                       >=1.4
     , hasql                          >=1.6
     , hasql-transaction              >=1.0
-    , keiro                          ^>=0.14.0.0
-    , keiro-core                     ^>=0.14.0.0
-    , kioku-api                      ^>=0.5.1.0
-    , kioku-core                     ^>=0.5.1.0
-    , kioku-migrations:test-support  ^>=0.5.1.0
+    , keiro                          ^>=0.15.0.0
+    , keiro-core                     ^>=0.15.0.0
+    , kioku-api                      ^>=0.5.2.0
+    , kioku-core                     ^>=0.5.2.0
+    , kioku-migrations:test-support  ^>=0.5.2.0
     , kiroku-store                   ^>=0.8.0.0
     , lens                           >=5.2
     , shibuya-core                   ^>=0.9.0.0
