diff --git a/pyproject.toml b/pyproject.toml
index 700181c..7c3abf1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,6 +6,6 @@ readme = "README.md"
 requires-python = ">=3.14"
 dependencies = [
     "mkdocs-material>=9.7.6",
-    "pymdown-extensions>=10.21.2",
+    "pymdown-extensions>=10.21.3",
     "python-markdown-math>=0.9",
 ]
diff --git a/uv.lock b/uv.lock
index 75b409a..85882f0 100644
--- a/uv.lock
+++ b/uv.lock
@@ -293,15 +293,15 @@ wheels = [
 
 [[package]]
 name = "pymdown-extensions"
-version = "10.21.2"
+version = "10.21.3"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "markdown" },
     { name = "pyyaml" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/df/08/f1c908c581fd11913da4711ea7ba32c0eee40b0190000996bb863b0c9349/pymdown_extensions-10.21.2.tar.gz", hash = "sha256:c3f55a5b8a1d0edf6699e35dcbea71d978d34ff3fa79f3d807b8a5b3fa90fbdc", size = 853922, upload-time = "2026-03-29T15:01:55.233Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/9e/26/d1015444da4d952a1ca487a236b522eb979766f0295a0bd0c5fc089989a9/pymdown_extensions-10.21.3.tar.gz", hash = "sha256:72cfcf55f07aea0d4af2c4f11dd4e52466ddfb1bb819673146398e0bd3a77354", size = 854140, upload-time = "2026-05-13T12:57:32.267Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/f7/27/a2fc51a4a122dfd1015e921ae9d22fee3d20b0b8080d9a704578bf9deece/pymdown_extensions-10.21.2-py3-none-any.whl", hash = "sha256:5c0fd2a2bea14eb39af8ff284f1066d898ab2187d81b889b75d46d4348c01638", size = 268901, upload-time = "2026-03-29T15:01:53.244Z" },
+    { url = "https://files.pythonhosted.org/packages/7e/85/545a951eecc270fcd688288c600017e2050a1aacb56c711d208586d3e470/pymdown_extensions-10.21.3-py3-none-any.whl", hash = "sha256:d7a5d08014fc571e80ca21dd6f854e31f94c489800350564d55d15b3c41e76b6", size = 269002, upload-time = "2026-05-13T12:57:30.296Z" },
 ]
 
 [[package]]
@@ -403,7 +403,7 @@ dependencies = [
 [package.metadata]
 requires-dist = [
     { name = "mkdocs-material", specifier = ">=9.7.6" },
-    { name = "pymdown-extensions", specifier = ">=10.21.2" },
+    { name = "pymdown-extensions", specifier = ">=10.21.3" },
     { name = "python-markdown-math", specifier = ">=0.9" },
 ]