diff --git a/poetry.lock b/poetry.lock
index 8b8b7b46dc..73aea5e0d4 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1032,14 +1032,14 @@ zookeeper = ["kazoo (>=1.3.1)"]
 
 [[package]]
 name = "markdown"
-version = "3.4.1"
-description = "Python implementation of Markdown."
+version = "3.4.3"
+description = "Python implementation of John Gruber's Markdown."
 category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "Markdown-3.4.1-py3-none-any.whl", hash = "sha256:08fb8465cffd03d10b9dd34a5c3fea908e20391a2a90b88d66362cb05beed186"},
-    {file = "Markdown-3.4.1.tar.gz", hash = "sha256:3b809086bb6efad416156e00a0da66fe47618a5d6918dd688f53f40c8e4cfeff"},
+    {file = "Markdown-3.4.3-py3-none-any.whl", hash = "sha256:065fd4df22da73a625f14890dd77eb8040edcbd68794bcd35943be14490608b2"},
+    {file = "Markdown-3.4.3.tar.gz", hash = "sha256:8bf101198e004dc93e84a12a7395e31aac6a9c9942848ae1d99b9d72cf9b3520"},
 ]
 
 [package.dependencies]
@@ -1854,4 +1854,4 @@ testing = ["flake8 (<5)", "func-timeout", "jaraco.functools", "jaraco.itertools"
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "baecf0ac1f23383c02495fefbfacd052674ea8f643934f493bb30aa9a00c5136"
+content-hash = "6240be827e4b4f2dc0ed33631ff95a989c20992c57aad2755db65d66753ccbaf"
diff --git a/pyproject.toml b/pyproject.toml
index 9987349636..3a239b291f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ django-anymail = "^8.2"
 django-countries = "^7.1"
 django-prometheus = "^2.1.0"
 django-simpleui = "^2023.3"
-Markdown = "^3.3.4"
+Markdown = "^3.4.3"
 python-alipay-sdk = "^3.0.1"
 sentry-sdk = "^1.10.1"
 short_url = "^1.2.2"