diff --git a/dev-requirements.txt b/dev-requirements.txt
index e4b084a..88cd566 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -16,10 +16,9 @@ babel==2.8.0 \
     --hash=sha256:1aac2ae2d0d8ea368fa90906567f5c08463d98ade155c0c4bfedd6a0f7160e38 \
     --hash=sha256:d670ea0b10f8b723672d3a6abeb87b565b244da220d76b4dba1b66269ec152d4 \
     # via sphinx
-bleach==3.1.5 \
-    --hash=sha256:2bce3d8fab545a6528c8fa5d9f9ae8ebc85a56da365c7f85180bfe96a35ef22f \
-    --hash=sha256:3c4c520fdb9db59ef139915a5db79f8b51bc2a7257ea0389f30c846883430a4b \
-    # via readme-renderer
+bleach==4.1.0 \
+    --hash=sha256:0900d8b37eba61a802ee40ac0061f8c2b5dee29c1927dd1d233e075ebf5a71da \
+    --hash=sha256:4d2651ab93271d1129ac9cbc679f524565cc8a1b791909c4a51eac4446a15994    # via readme-renderer
 bump2version==1.0.0 \
     --hash=sha256:477f0e18a0d58e50bb3dbc9af7fcda464fd0ebfc7a6151d8888602d7153171a0 \
     --hash=sha256:cd4f3a231305e405ed8944d8ff35bd742d9bc740ad62f483bd0ca21ce7131984 \