diff --git a/packages/core/package.json b/packages/core/package.json
index 19e76e778..308b5426c 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -65,7 +65,7 @@
     "@ai-sdk/anthropic": "3.0.82",
     "@ai-sdk/azure": "3.0.49",
     "@ai-sdk/cerebras": "2.0.41",
-    "@ai-sdk/cohere": "3.0.27",
+    "@ai-sdk/cohere": "4.0.26",
     "@ai-sdk/deepinfra": "2.0.41",
     "@ai-sdk/gateway": "3.0.104",
     "@ai-sdk/google": "3.0.73",
diff --git a/packages/opencode/package.json b/packages/opencode/package.json
index 1714dafea..edd53ec3a 100644
--- a/packages/opencode/package.json
+++ b/packages/opencode/package.json
@@ -64,7 +64,7 @@
     "@ai-sdk/anthropic": "3.0.82",
     "@ai-sdk/azure": "3.0.49",
     "@ai-sdk/cerebras": "2.0.41",
-    "@ai-sdk/cohere": "3.0.27",
+    "@ai-sdk/cohere": "4.0.26",
     "@ai-sdk/deepinfra": "2.0.41",
     "@ai-sdk/gateway": "3.0.104",
     "@ai-sdk/google": "3.0.73",