diff --git a/13.0/base_requirements.txt b/13.0/base_requirements.txt
index 88189e9a..fa6ca616 100644
--- a/13.0/base_requirements.txt
+++ b/13.0/base_requirements.txt
@@ -41,7 +41,7 @@ requests==2.25.1  # official 2.21.0
 zeep==3.2.0
 vatnumber==1.2
 vobject==0.9.6.1
-Werkzeug==2.3.8 ; sys_platform != 'win32' # official 0.14.1
+Werkzeug==0.16.1 ; sys_platform != 'win32' # official 0.14.1
 # Werkzeug==0.16.0 ; sys_platform == 'win32'
 XlsxWriter==1.1.2
 xlwt==1.3.*