diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 ## Unreleased
 
+## 0.2.0.2 — 2026-08-07
+
+### Changed
+
+- Upgraded the `baikai` dependency to the `0.5` series (`>=0.5 && <0.6`).
+  Dependency bounds only — no changes to the exported API.
+
 ## 0.2.0.1 - 2026-07-20
 
 ### Changed
diff --git a/shikumi-eval.cabal b/shikumi-eval.cabal
--- a/shikumi-eval.cabal
+++ b/shikumi-eval.cabal
@@ -1,6 +1,6 @@
 cabal-version:   3.4
 name:            shikumi-eval
-version:         0.2.0.1
+version:         0.2.0.2
 synopsis:        Typed evaluation framework for shikumi LM programs (EP-8)
 category:        AI
 description:
@@ -46,7 +46,7 @@
 
   build-depends:
     , aeson
-    , baikai        >=0.4      && <0.5
+    , baikai        >=0.5      && <0.6
     , base          >=4.20     && <5
     , bytestring
     , containers
@@ -79,7 +79,7 @@
 
   build-depends:
     , aeson
-    , baikai        >=0.4      && <0.5
+    , baikai        >=0.5      && <0.6
     , base
     , effectful
     , generic-lens
diff --git a/test/EvalFixtures.hs b/test/EvalFixtures.hs
--- a/test/EvalFixtures.hs
+++ b/test/EvalFixtures.hs
@@ -129,7 +129,7 @@
 -- non-zero usage as 'usageResponse'.
 usageTerminalEvents :: Text -> [AssistantMessageEvent]
 usageTerminalEvents t =
-  [EventDone (doneTerminal Nothing Stop (AssistantMessage (usageResponse t ^. #message)))]
+  [EventDone (doneTerminal Nothing Nothing Stop (AssistantMessage (usageResponse t ^. #message)))]
 
 -- | An assistant 'Response' whose body decodes (via the fallback adapter) to a
 -- record with the given @(field, value)@ sections.