diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 ## Unreleased
 
+## 0.3.0.2 — 2026-10-16
+
+### Changed
+
+- Require the compatible Shikumi patch releases built against Baikai 0.8.
+
+- Upgrade `mori://shinzui/baikai/packages/baikai` to `>=0.8.0.0 && <0.9`.
+
 ## 0.3.0.1 — 2026-10-05
 
 - Move the dependency on `mori://shinzui/baikai/packages/baikai` to `>=0.7.1.0 && <0.8` and widen the `effectful` bound to `>=2.6 && <2.8`, so both effectful 2.6 and 2.7 are supported (effectful 2.7 needs `baikai-effectful` 0.4.0.2, effectful 2.6 needs 0.4.0.1). Bounds only; no source changed.
diff --git a/shikumi-trace.cabal b/shikumi-trace.cabal
--- a/shikumi-trace.cabal
+++ b/shikumi-trace.cabal
@@ -1,6 +1,6 @@
 cabal-version: 3.4
 name: shikumi-trace
-version: 0.3.0.1
+version: 0.3.0.2
 synopsis:
   Hierarchical tracing, observability, and deterministic replay for shikumi (EP-7)
 
@@ -58,7 +58,7 @@
 
   build-depends:
     aeson >=2.2 && <2.3,
-    baikai >=0.7.1.0 && <0.8,
+    baikai >=0.8.0.0 && <0.9,
     base >=4.20 && <5,
     bytestring >=0.11 && <0.13,
     containers >=0.6 && <0.9,
@@ -67,8 +67,8 @@
     generic-lens >=2.2 && <2.4,
     lens ^>=5.3,
     scientific >=0.3 && <0.4,
-    shikumi ^>=0.4.0.0,
-    shikumi-cache ^>=0.2.0.1,
+    shikumi ^>=0.4.1.1,
+    shikumi-cache ^>=0.2.0.2,
     text ^>=2.1,
     time >=1.12 && <1.17,
     vector >=0.13 && <0.14,
@@ -83,7 +83,7 @@
 
   build-depends:
     base,
-    shikumi-trace ^>=0.3.0.1,
+    shikumi-trace ^>=0.3.0.2,
 
 test-suite shikumi-trace-test
   import: common-options
@@ -101,16 +101,16 @@
   build-depends:
     QuickCheck,
     aeson,
-    baikai >=0.7.1.0 && <0.8,
+    baikai >=0.8.0.0 && <0.9,
     base,
     bytestring,
     containers,
     effectful,
     generic-lens,
     lens ^>=5.3,
-    shikumi ^>=0.4.0.0,
-    shikumi-cache ^>=0.2.0.1,
-    shikumi-trace ^>=0.3.0.1,
+    shikumi ^>=0.4.1.1,
+    shikumi-cache ^>=0.2.0.2,
+    shikumi-trace ^>=0.3.0.2,
     tasty,
     tasty-hunit,
     tasty-quickcheck,