diff --git a/lstmcpipe/tests/test_utils.py b/lstmcpipe/tests/test_utils.py
index 79577572..505671e4 100644
--- a/lstmcpipe/tests/test_utils.py
+++ b/lstmcpipe/tests/test_utils.py
@@ -86,7 +86,7 @@ def test_sbatch_lst_mc_stage():
 
     sbatch.extra_slurm_options = None
     sbatch.slurm_dependencies = "123,243,345,456"
-    assert sbatch._construct_slurm_dependencies() == "--dependency=afterok:123,243,345,456"
+    assert sbatch._construct_slurm_dependencies() == "--dependency=afterok:123:243:345:456"
 
     sbatch.compose_wrap_command(
         wrap_command="python args",
diff --git a/lstmcpipe/utils.py b/lstmcpipe/utils.py
index 6ab30635..723c7eaa 100644
--- a/lstmcpipe/utils.py
+++ b/lstmcpipe/utils.py
@@ -285,7 +285,7 @@ def _construct_slurm_dependencies(self):
         if slurm_deps is None or slurm_deps == "":
             return ""
         elif all(items != "" for items in slurm_deps.split(",")):
-            return f"--dependency={dependency_type}:{slurm_deps}"
+            return f"--dependency={dependency_type}:{slurm_deps.replace(',',':')}"
         else:
             raise ValueError("Slurm dependencies contain an empty value between commas, i.e.; ,'', ")