diff --git a/flowmachine/Pipfile.lock b/flowmachine/Pipfile.lock
index edfc5090e4..1597cdb0df 100644
--- a/flowmachine/Pipfile.lock
+++ b/flowmachine/Pipfile.lock
@@ -118,12 +118,12 @@
         },
         "marshmallow": {
             "hashes": [
-                "sha256:3350409f20a70a7e4e11a27661187b77cdcaeb20abca41c1454fe33636bea09c",
-                "sha256:e6d8affb6cb61d39d26402096dc0aee12d5a26d490a121f118d2e81dc0719dc6"
+                "sha256:72f14ef346f81269dbddee891bac547dda1501e9e08b6a809756ea3dbb7936a1",
+                "sha256:e1d860bd262737cb2d34e1541b84cb52c32c72c9474e3fe6f30f137ef8b0d97f"
             ],
             "index": "pypi",
             "markers": "python_version >= '3.9'",
-            "version": "==3.26.1"
+            "version": "==4.0.1"
         },
         "marshmallow-oneofschema": {
             "hashes": [