diff --git a/automation/taskcluster/decision_task.py b/automation/taskcluster/decision_task.py
index a3a7f563f..63c862c12 100644
--- a/automation/taskcluster/decision_task.py
+++ b/automation/taskcluster/decision_task.py
@@ -14,7 +14,7 @@ import taskcluster
 
 from lib import build_variants
 from lib.tasks import TaskBuilder, schedule_task_graph
-from lib.util import (
+from lib.chain_of_trust import (
     populate_chain_of_trust_task_graph,
     populate_chain_of_trust_required_but_unused_files
 )
diff --git a/automation/taskcluster/lib/chain_of_trust.py b/automation/taskcluster/lib/chain_of_trust.py
new file mode 100644
index 000000000..7ef50c02f
--- /dev/null
+++ b/automation/taskcluster/lib/chain_of_trust.py
@@ -0,0 +1,20 @@
+import json
+
+
+def populate_chain_of_trust_required_but_unused_files():
+    # Thoses files are needed to keep chainOfTrust happy. However, they have no
+    # need for android-components, at the moment. For more details, see:
+    # https://github.com/mozilla-releng/scriptworker/pull/209/files#r184180585
+
+    for file_names in ('actions.json', 'parameters.yml'):
+        with open(file_names, 'w') as f:
+            json.dump({}, f)    # Yaml is a super-set of JSON.
+
+
+def populate_chain_of_trust_task_graph(full_task_graph):
+    # taskgraph must follow the format:
+    # {
+    #    task_id: full_task_definition
+    # }
+    with open('task-graph.json', 'w') as f:
+        json.dump(full_task_graph, f)
diff --git a/automation/taskcluster/lib/util.py b/automation/taskcluster/lib/util.py
index 38c46e4fb..8851b1918 100644
--- a/automation/taskcluster/lib/util.py
+++ b/automation/taskcluster/lib/util.py
@@ -1,4 +1,3 @@
-import json
 import re
 
 
@@ -6,22 +5,3 @@ def convert_camel_case_into_kebab_case(string):
     # Inspired from https://stackoverflow.com/questions/1175208/elegant-python-function-to-convert-camelcase-to-snake-case  # noqa: E501
     first_pass = re.sub('(.)([A-Z][a-z]+)', r'\1-\2', string)
     return re.sub('([a-z0-9])([A-Z])', r'\1-\2', first_pass).lower()
-
-
-def populate_chain_of_trust_required_but_unused_files():
-    # Thoses files are needed to keep chainOfTrust happy. However, they have no
-    # need for android-components, at the moment. For more details, see:
-    # https://github.com/mozilla-releng/scriptworker/pull/209/files#r184180585
-
-    for file_names in ('actions.json', 'parameters.yml'):
-        with open(file_names, 'w') as f:
-            json.dump({}, f)    # Yaml is a super-set of JSON.
-
-
-def populate_chain_of_trust_task_graph(full_task_graph):
-    # taskgraph must follow the format:
-    # {
-    #    task_id: full_task_definition
-    # }
-    with open('task-graph.json', 'w') as f:
-        json.dump(full_task_graph, f)