diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 ## Unreleased
 
+## 0.2.1.2 — 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`.
+
 ## 0.2.1.1 — 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-compile.cabal b/shikumi-compile.cabal
--- a/shikumi-compile.cabal
+++ b/shikumi-compile.cabal
@@ -1,6 +1,6 @@
 cabal-version: 3.4
 name: shikumi-compile
-version: 0.2.1.1
+version: 0.2.1.2
 synopsis: The compiler layer for shikumi LM programs (EP-9)
 category: AI
 description:
@@ -62,7 +62,7 @@
     effectful >=2.6 && <2.8,
     generic-lens >=2.2 && <2.4,
     lens ^>=5.3,
-    shikumi ^>=0.4.0.0,
+    shikumi ^>=0.4.1.1,
     text ^>=2.1,
 
 test-suite shikumi-compile-test
@@ -81,14 +81,14 @@
 
   build-depends:
     aeson,
-    baikai >=0.7.1.0 && <0.8,
+    baikai >=0.8.0.0 && <0.9,
     base,
     bytestring,
     effectful,
     generic-lens,
     lens,
-    shikumi ^>=0.4.0.0,
-    shikumi-compile ^>=0.2.1.1,
+    shikumi ^>=0.4.1.1,
+    shikumi-compile ^>=0.2.1.2,
     tasty,
     tasty-hunit,
     text,