diff --git a/SECURITY.md b/SECURITY.md
index 38ead27f93d..d1b14f8da01 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -9,6 +9,7 @@ The following versions of Kitodo.Production are currently being supported with o
 | 3.7 | :heavy_check_mark:       |    :heavy_check_mark:    |
 | 3.6 | :heavy_multiplication_x: |    :heavy_check_mark:    |
 | 3.5 | :heavy_multiplication_x: | :heavy_multiplication_x: |
+| 3.4 | :heavy_multiplication_x: | :heavy_multiplication_x: |
 | 3.3 | :heavy_multiplication_x: | :heavy_multiplication_x: |
 | 3.2 | :heavy_multiplication_x: | :heavy_multiplication_x: |
 | 3.1 | :heavy_multiplication_x: | :heavy_multiplication_x: |