diff --git a/server/pyproject.toml b/server/pyproject.toml
index 27de72a8..43d850ec 100644
--- a/server/pyproject.toml
+++ b/server/pyproject.toml
@@ -6,7 +6,7 @@ requires-python = ">=3.12"
 dependencies = [
     "fastapi>=0.115.0",
     "uvicorn[standard]>=0.30.0",
-    "anthropic>=0.40.0",
+    "anthropic>=0.94.0",
     "openai>=1.50.0",
     "asyncpg>=0.30.0",
     "sqlalchemy[asyncio]>=2.0.0",