diff --git a/.changeset/update-api-client.md b/.changeset/update-api-client.md
new file mode 100644
index 00000000..4206ee37
--- /dev/null
+++ b/.changeset/update-api-client.md
@@ -0,0 +1,10 @@
+---
+"@perstack/core": patch
+"@perstack/runtime": patch
+"perstack": patch
+---
+
+Update @perstack/api-client to ^0.0.54
+
+- Bump @perstack/api-client from ^0.0.51 to ^0.0.54
+- Bump @perstack/core to satisfy peer dependency requirement (>0.0.40)
diff --git a/apps/perstack/package.json b/apps/perstack/package.json
index ed9c07e1..b18869c8 100644
--- a/apps/perstack/package.json
+++ b/apps/perstack/package.json
@@ -20,7 +20,7 @@
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {
-    "@perstack/api-client": "^0.0.51",
+    "@perstack/api-client": "^0.0.54",
     "@perstack/core": "workspace:*",
     "@perstack/react": "workspace:*",
     "@perstack/runtime": "workspace:*",
diff --git a/apps/runtime/package.json b/apps/runtime/package.json
index 86ca683b..023b763a 100644
--- a/apps/runtime/package.json
+++ b/apps/runtime/package.json
@@ -41,7 +41,7 @@
     "@ai-sdk/openai": "^2.0.0",
     "@modelcontextprotocol/sdk": "^1.25.1",
     "@paralleldrive/cuid2": "^3.0.4",
-    "@perstack/api-client": "^0.0.51",
+    "@perstack/api-client": "^0.0.54",
     "@perstack/base": "workspace:*",
     "@perstack/core": "workspace:*",
     "ai": "^5.0.115",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 3e11e889..a33d449c 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -153,8 +153,8 @@ importers:
   apps/perstack:
     dependencies:
       '@perstack/api-client':
-        specifier: ^0.0.51
-        version: 0.0.51(@perstack/core@packages+core)(zod@4.2.1)
+        specifier: ^0.0.54
+        version: 0.0.54(@perstack/core@packages+core)(zod@4.2.1)
       '@perstack/core':
         specifier: workspace:*
         version: link:../../packages/core
@@ -241,8 +241,8 @@ importers:
         specifier: ^3.0.4
         version: 3.0.4
       '@perstack/api-client':
-        specifier: ^0.0.51
-        version: 0.0.51(@perstack/core@packages+core)(zod@4.2.1)
+        specifier: ^0.0.54
+        version: 0.0.54(@perstack/core@packages+core)(zod@4.2.1)
       '@perstack/base':
         specifier: workspace:*
         version: link:../base
@@ -1838,10 +1838,10 @@ packages:
     resolution: {integrity: sha512-sM6M2PWrByOEpN2QYAdulhEbSZmChwj0e52u4hpwB7u4PznFiNAavtE6m7O8tWUlzX+jT2eKKtc5/ZgX+IHrtg==}
     hasBin: true
 
-  '@perstack/api-client@0.0.51':
-    resolution: {integrity: sha512-MlZFsx3dOF8qblqPzEy87GgO+LcP6CHdy4uKcio415SLSSGLJVQpzmWc7EkXpKx+PjmQnSDNbtW9lbVHVFgiwA==}
+  '@perstack/api-client@0.0.54':
+    resolution: {integrity: sha512-McVIYcwxP68+Lzo7NJduh1CFaPbUgSxuY98yBEWJM5MKDnuvhmyodbKlxPuVfCLlOUECdX4mELof2MqqXlCPDA==}
     peerDependencies:
-      '@perstack/core': '>=0.0.35'
+      '@perstack/core': '>0.0.40'
       zod: '>=4.0.0'
 
   '@pkgjs/parseargs@0.11.0':
@@ -5215,7 +5215,7 @@ snapshots:
       bignumber.js: 9.3.1
       error-causes: 3.0.2
 
-  '@perstack/api-client@0.0.51(@perstack/core@packages+core)(zod@4.2.1)':
+  '@perstack/api-client@0.0.54(@perstack/core@packages+core)(zod@4.2.1)':
     dependencies:
       '@perstack/core': link:packages/core
       zod: 4.2.1