diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index ae30c10..6e0ff01 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -16,7 +16,7 @@ dependencies = [
     "uvicorn>=0.30",
     "firebase-admin>=6.5",
     "google-cloud-firestore>=2.16",
-    "anthropic>=0.117.0",
+    "anthropic>=0.120.0",
     "tzdata; sys_platform == 'win32'",
 ]
 
diff --git a/backend/uv.lock b/backend/uv.lock
index f95d1d8..3121031 100644
--- a/backend/uv.lock
+++ b/backend/uv.lock
@@ -30,7 +30,7 @@ wheels = [
 
 [[package]]
 name = "anthropic"
-version = "0.117.0"
+version = "0.120.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "anyio" },
@@ -42,9 +42,9 @@ dependencies = [
     { name = "sniffio" },
     { name = "typing-extensions" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/41/0d/8f71d535edb0d438f023bd825fb65f67c14fa88a2bd6b75f292a58a63de4/anthropic-0.117.0.tar.gz", hash = "sha256:98107f2b76439641e0ae2a1754087534b8f178dbab99d6eb1bc4b7bc8c744496", size = 989933, upload-time = "2026-07-16T19:36:13.07Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/92/5c/3331da4fc009d448008a50c78d86cc929e8c937cd1442245ce3f80561c4e/anthropic-0.120.0.tar.gz", hash = "sha256:6ba6007dc9b00365b20f6101a6618f5196ac1ceef81512e4b5cc0e7436d4975d", size = 1008042, upload-time = "2026-07-24T16:32:52.384Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/b7/4c/917d21d6619a4475cdafc6d13a69fdb3b901ddac57e76caca5a25c117b6d/anthropic-0.117.0-py3-none-any.whl", hash = "sha256:451a0a6905f11dff7663d13e4ee5dbf909eb8942b1d049803c7b937a13ac47ec", size = 998327, upload-time = "2026-07-16T19:36:11.225Z" },
+    { url = "https://files.pythonhosted.org/packages/1b/8a/8522bdf809e1f95f0d9c936540987a3f6afba01d2921a2bf488dedf836a8/anthropic-0.120.0-py3-none-any.whl", hash = "sha256:591bd531563ec7b63a1e138f5c11f14cb94edda99623b349c2ce2ece8e08b8a5", size = 1022602, upload-time = "2026-07-24T16:32:50.506Z" },
 ]
 
 [[package]]
@@ -211,7 +211,7 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "anthropic", specifier = ">=0.117.0" },
+    { name = "anthropic", specifier = ">=0.120.0" },
     { name = "ca-roads-mcp", git = "https://github.com/nicglazkov/ca-roads-mcp?rev=0b9e3a7d5f54b20a7e8cc1315fe26d80f08544c0" },
     { name = "fastapi", specifier = ">=0.139.2" },
     { name = "firebase-admin", specifier = ">=6.5" },