diff --git a/Dockerfile b/Dockerfile
index 5b5cd4f19..23689f03c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -106,7 +106,8 @@ RUN if [ -f requirements.txt ]; then \
         qifparse \
         pypdf \
         phonenumbers \
-        python-docx
+        python-docx \
+        pyzk
 
 # ------------------------------------------------------------------
 # Create Required Directories
diff --git a/requirements.txt b/requirements.txt
index 4ab05f258..e65e3e650 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -92,3 +92,4 @@ zeep==4.2.1 ; python_version >= '3.11'
 qifparse
 pandas
 pypdf
+pyzk