diff --git a/test/pypesto/test_pypesto.py b/test/pypesto/test_pypesto.py
index d64de876..de6f2576 100644
--- a/test/pypesto/test_pypesto.py
+++ b/test/pypesto/test_pypesto.py
@@ -19,9 +19,10 @@
 
 # Set to `[]` to test all
 test_cases = [
-    #'0006',
-    #'0002',
-    #'0008',
+    # '0006',
+    # '0002',
+    # '0008',
+    # "0009",
 ]
 
 # Do not use computationally-expensive test cases in CI
diff --git a/test_cases/0009/predecessor_model.yaml b/test_cases/0009/predecessor_model.yaml
index c2cba72d..4471224b 100644
--- a/test_cases/0009/predecessor_model.yaml
+++ b/test_cases/0009/predecessor_model.yaml
@@ -1,8 +1,8 @@
 criteria:
   NLLH: inf
 estimated_parameters: {}
-model_hash: cf9e9633bb9566b26275cc273997fe8c873e4b017e84da13889951f93b6a2950b334af9cc97b582bd43626834d09cd028803056c97dd4692f1e4b209258752a7
-model_id: cf9e9633bb9566b26275cc273997fe8c873e4b017e84da13889951f93b6a2950b334af9cc97b582bd43626834d09cd028803056c97dd4692f1e4b209258752a7
+model_hash: M-01000001111110010011010011010001
+model_id: M-01000001111110010011010011010001
 model_subspace_id: M
 model_subspace_indices:
 - 0
@@ -71,4 +71,4 @@ parameters:
   a_k16_k08k16: 1
   a_k16_k12k16: estimate
 petab_yaml: petab/petab_problem.yaml
-predecessor_model_hash: None
+predecessor_model_hash: null