diff --git a/dist/buildinfo.json b/dist/buildinfo.json
index ae65ef5e..fe183bc7 100644
--- a/dist/buildinfo.json
+++ b/dist/buildinfo.json
@@ -1 +1 @@
-{"sha":"e9ceae4","timestamp":1735035887}
\ No newline at end of file
+{"sha":"2b81827","timestamp":1735091598}
\ No newline at end of file
diff --git a/dist/index.js b/dist/index.js
index c608426b..edc9c539 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -192,8 +192,8 @@ class ConfigMerger {
     }
   }
 }
-const BUILD_TIMESTAMP = 1735035887;
-const BUILD_VERSION = "e9ceae4";
+const BUILD_TIMESTAMP = 1735091598;
+const BUILD_VERSION = "2b81827";
 function createAgentUserConfig() {
   return Object.assign(
     {},
@@ -1240,11 +1240,12 @@ function fixOpenAICompatibleOptions(options) {
   return options;
 }
 function isJsonResponse(resp) {
-  return resp.headers.get("content-type")?.includes("json") || false;
+  const contentType = resp.headers.get("content-type");
+  return contentType?.toLowerCase().includes("application/json") ?? false;
 }
 function isEventStreamResponse(resp) {
   const types = ["application/stream+json", "text/event-stream"];
-  const content = resp.headers.get("content-type") || "";
+  const content = resp.headers.get("content-type")?.toLowerCase() || "";
   for (const type of types) {
     if (content.includes(type)) {
       return true;
diff --git a/packages/lib/core/src/agent/request.ts b/packages/lib/core/src/agent/request.ts
index 6d8df04f..8aea0d5c 100644
--- a/packages/lib/core/src/agent/request.ts
+++ b/packages/lib/core/src/agent/request.ts
@@ -27,12 +27,13 @@ function fixOpenAICompatibleOptions(options: SseChatCompatibleOptions | null): S
 }
 
 export function isJsonResponse(resp: Response): boolean {
-    return resp.headers.get('content-type')?.includes('json') || false;
+    const contentType = resp.headers.get('content-type');
+    return contentType?.toLowerCase().includes('application/json') ?? false;
 }
 
 export function isEventStreamResponse(resp: Response): boolean {
     const types = ['application/stream+json', 'text/event-stream'];
-    const content = resp.headers.get('content-type') || '';
+    const content = resp.headers.get('content-type')?.toLowerCase() || '';
     for (const type of types) {
         if (content.includes(type)) {
             return true;
diff --git a/packages/lib/core/src/config/version.ts b/packages/lib/core/src/config/version.ts
index 9773395e..bac5590e 100644
--- a/packages/lib/core/src/config/version.ts
+++ b/packages/lib/core/src/config/version.ts
@@ -1,2 +1,2 @@
-export const BUILD_TIMESTAMP = 1735035887;
-export const BUILD_VERSION = 'e9ceae4';
+export const BUILD_TIMESTAMP = 1735091598;
+export const BUILD_VERSION = '2b81827';