diff --git a/packages/react-langgraph/CHANGELOG.md b/packages/react-langgraph/CHANGELOG.md
index b3963fb45..3c7da8753 100644
--- a/packages/react-langgraph/CHANGELOG.md
+++ b/packages/react-langgraph/CHANGELOG.md
@@ -1,5 +1,11 @@
 # @assistant-ui/react-langgraph
 
+## 0.0.20
+
+### Patch Changes
+
+- fix(langgraph): use correct image_url format
+
 ## 0.0.19
 
 ### Patch Changes
diff --git a/packages/react-langgraph/package.json b/packages/react-langgraph/package.json
index f0cbb9421..d4974f964 100644
--- a/packages/react-langgraph/package.json
+++ b/packages/react-langgraph/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@assistant-ui/react-langgraph",
-  "version": "0.0.19",
+  "version": "0.0.20",
   "license": "MIT",
   "exports": {
     ".": {
diff --git a/packages/react-langgraph/src/useLangGraphRuntime.ts b/packages/react-langgraph/src/useLangGraphRuntime.ts
index aeb803e44..040233714 100644
--- a/packages/react-langgraph/src/useLangGraphRuntime.ts
+++ b/packages/react-langgraph/src/useLangGraphRuntime.ts
@@ -106,7 +106,7 @@ export const useLangGraphRuntime = ({
               case "text":
                 return { type: "text", text: part.text };
               case "image":
-                return { type: "image_url", image_url: part.image };
+                return { type: "image_url", image_url: { url: part.image } };
 
               case "tool-call":
                 throw new Error("Tool call appends are not supported yet.");