diff --git a/requirements.txt b/requirements.txt
index e873caacee7..2c76cf965e0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@
 # IN THE SOFTWARE.
 
 # Direct dependencies
-mkdocs>=1.1, <1.2
+mkdocs>=1.1, <1.4
 Pygments>=2.4
 markdown>=3.2
 pymdown-extensions>=7.0