--- a/tools/moztreedocs/requirements.in
+++ b/tools/moztreedocs/requirements.in
@@ -12,17 +12,17 @@ fluent.pygments==1.0
 fluent.syntax==0.18.1
 idna==2.10
 imagesize==1.2.0
 importlib-metadata==2.0.0
 Jinja2==2.11.2
 jmespath==0.10.0
 jsonschema==3.2.0
 livereload==2.6.3
-Markdown==3.2.2
+Markdown==3.3.3
 MarkupSafe==1.1.1
 mock==4.0.2
 packaging==20.4
 parsimonious==0.7.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 Pygments==2.7.1
 pyparsing==2.4.7

--- a/tools/moztreedocs/requirements.txt
+++ b/tools/moztreedocs/requirements.txt
@@ -74,19 +74,19 @@ jmespath==0.10.0 \
     # via -r requirements.in, boto3, botocore
 jsonschema==3.2.0 \
     --hash=sha256:4e5b3cf8216f577bee9ce139cbe72eca3ea4f292ec60928ff24758ce626cd163 \
     --hash=sha256:c8a85b28d377cc7737e46e2d9f2b4f44ee3c0e1deac6bf46ddefc7187d30797a \
     # via -r requirements.in
 livereload==2.6.3 \
     --hash=sha256:776f2f865e59fde56490a56bcc6773b6917366bce0c267c60ee8aaf1a0959869 \
     # via -r requirements.in
-markdown==3.2.2 \
-    --hash=sha256:1fafe3f1ecabfb514a5285fca634a53c1b32a81cb0feb154264d55bf2ff22c17 \
-    --hash=sha256:c467cd6233885534bf0fe96e62e3cf46cfc1605112356c4f9981512b8174de59 \
+markdown==3.3.3 \
+    --hash=sha256:5d9f2b5ca24bc4c7a390d22323ca4bad200368612b5aaa7796babf971d2b2f18 \
+    --hash=sha256:c109c15b7dc20a9ac454c9e6025927d44460b85bd039da028d85e2b6d0bcc328 \
     # via -r requirements.in, sphinx-markdown-tables
 markupsafe==1.1.1 \
     --hash=sha256:00bc623926325b26bb9605ae9eae8a215691f33cae5df11ca5424f06f2d1f473 \
     --hash=sha256:09027a7803a62ca78792ad89403b1b7a73a01c8cb65909cd876f7fcebd79b161 \
     --hash=sha256:09c4b7f37d6c648cb13f9230d847adf22f8171b1ccc4d5682398e77f40309235 \
     --hash=sha256:1027c282dad077d0bae18be6794e6b6b8c91d58ed8a8d89a89d59693b9131db5 \
     --hash=sha256:13d3144e1e340870b25e7b10b98d779608c02016d5184cfb9927a9f10c689f42 \
     --hash=sha256:24982cc2533820871eba85ba648cd53d8623687ff11cbb805be4ff7b4c971aff \