diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 65a00a562..5ebeb526d 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -53,7 +53,7 @@ Homepage = "https://github.com/DSD-DBS/capella-collab-manager"
 [project.optional-dependencies]
 dev = [
   "black",
-  "capellambse==0.5.36",
+  "capellambse==0.5.47",
   "deepdiff",
   "isort",
   "mypy",