diff --git a/backend/requirements.txt b/backend/requirements.txt
index 3437ab7652..539835dd22 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -19,6 +19,7 @@ aiocache==0.12.3
 aiofiles==25.1.0
 starlette-compress==1.7.0
 Brotli==1.2.0
+brotlicffi==1.2.0.1
 httpx[socks,http2,zstd,cli,brotli]==0.28.1
 starsessions[redis]==2.2.1
 python-mimeparse==2.0.0
diff --git a/pyproject.toml b/pyproject.toml
index 3d458de753..2a802637a1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,7 @@ dependencies = [
     "aiofiles==25.1.0",
     "starlette-compress==1.7.0",
     "Brotli==1.2.0",
+    "brotlicffi==1.2.0.1",
     "httpx[socks,http2,zstd,cli,brotli]==0.28.1",
     "starsessions[redis]==2.2.1",
     "python-mimeparse==2.0.0",