diff --git a/application/requirements.txt b/application/requirements.txt
index 26a8dd49..a2055e09 100644
--- a/application/requirements.txt
+++ b/application/requirements.txt
@@ -10,7 +10,7 @@ iso8601==2.1.0
 itsdangerous==2.1.2
 Jinja2==3.1.4
 lxml==4.9.4
-MarkupSafe==2.1.3
+MarkupSafe==2.1.5
 Paste==3.10.1
 PasteDeploy==3.0.1
 plaster==1.1.2
diff --git a/deployment/roles/briefkasten/files/requirements.txt b/deployment/roles/briefkasten/files/requirements.txt
index 637c47da..5143bb3b 100644
--- a/deployment/roles/briefkasten/files/requirements.txt
+++ b/deployment/roles/briefkasten/files/requirements.txt
@@ -10,7 +10,7 @@ iso8601==2.1.0
 itsdangerous==2.1.2
 Jinja2==3.1.4
 lxml==4.9.4
-MarkupSafe==2.1.3
+MarkupSafe==2.1.5
 Paste==3.10.1
 PasteDeploy==3.0.1
 plaster==1.1.2