diff --git a/ci/requirements.txt b/ci/requirements.txt
index 0c7394773d..92a251ee6e 100644
--- a/ci/requirements.txt
+++ b/ci/requirements.txt
@@ -76,9 +76,9 @@ beautifulsoup4==4.13.4 \
     --hash=sha256:9bbbb14bfde9d79f38b8cd5f8c7c85f4b8f2523190ebed90e950a8dea4cb1c4b \
     --hash=sha256:dbb3c4e1ceae6aefebdaf2423247260cd062430a410e38c66f2baa50a8437195
     # via nbconvert
-bleach==6.2.0 \
-    --hash=sha256:117d9c6097a7c3d22fd578fcd8d35ff1e125df6736f554da4e432fdd63f31e5e \
-    --hash=sha256:123e894118b8a599fd80d3ec1a6d4cc7ce4e5882b1317a7e1ba69b56e95f991f
+bleach==6.4.0 \
+    --hash=sha256:4202482733d85cedd04e59fcb2f89f4e4c7c385a78d3c3c23c30446843a37452 \
+    --hash=sha256:4b6b6a54fff2e69a3dde9d21cc6301220bee3c3cb792187d11403fd795031081
     # via nbconvert
 bokeh==3.4.3 ; python_full_version < '3.10' \
     --hash=sha256:b7c22fb0f7004b04f12e1b7b26ee0269a26737a08ded848fb58f6a34ec1eb155 \