diff --git a/spacy/tests/regression/test_issue3449.py b/spacy/tests/regression/test_issue3449.py
index 40aa43bb7..9f670d5aa 100644
--- a/spacy/tests/regression/test_issue3449.py
+++ b/spacy/tests/regression/test_issue3449.py
@@ -1,3 +1,4 @@
+# coding: utf8
 import pytest
 
 from spacy.lang.en import English
diff --git a/spacy/tests/regression/test_issue3521.py b/spacy/tests/regression/test_issue3521.py
index 1fe5e00d7..12f285099 100644
--- a/spacy/tests/regression/test_issue3521.py
+++ b/spacy/tests/regression/test_issue3521.py
@@ -1,3 +1,4 @@
+# coding: utf8
 import pytest