diff --git a/docs/requirements.txt b/docs/requirements.txt
index 4797b60..ff09c4f 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -10,9 +10,9 @@ atomicwrites==1.3.0; sys_platform == "win32" \
 attrs==19.3.0 \
     --hash=sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c \
     --hash=sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72
-babel==2.8.0 \
-    --hash=sha256:d670ea0b10f8b723672d3a6abeb87b565b244da220d76b4dba1b66269ec152d4 \
-    --hash=sha256:1aac2ae2d0d8ea368fa90906567f5c08463d98ade155c0c4bfedd6a0f7160e38
+babel==2.9.1 \
+    --hash=sha256:ab49e12b91d937cd11f0b67cb259a57ab4ad2b59ac7a3b41d6c06c0ac5b0def9 \
+    --hash=sha256:bc0c176f9f6a994582230df350aa6e05ba2ebe4b3ac317eab29d9be5d2768da0
 certifi==2020.4.5.1 \
     --hash=sha256:1d987a998c75633c40847cc966fcf5904906c920a7f17ef374f5aa4282abd304 \
     --hash=sha256:51fcb31174be6e6664c5f69e3e1691a2d72a1a12e90f872cbdb1567eb47b6519