diff --git a/octavia_lib/hacking/checks.py b/octavia_lib/hacking/checks.py
index 220591c..00ec257 100644
--- a/octavia_lib/hacking/checks.py
+++ b/octavia_lib/hacking/checks.py
@@ -185,7 +185,7 @@ def no_log_warn(logical_line):
     O339
     """
     if logical_line.startswith('LOG.warn('):
-        yield(0, "O339:Use LOG.warning() rather than LOG.warn()")
+        yield (0, "O339:Use LOG.warning() rather than LOG.warn()")
 
 
 @core.flake8ext
@@ -248,7 +248,7 @@ def check_no_basestring(logical_line):
     if no_basestring_re.search(logical_line):
         msg = ("O343: basestring is not Python3-compatible, use "
                "str instead.")
-        yield(0, msg)
+        yield (0, msg)
 
 
 @core.flake8ext
diff --git a/test-requirements.txt b/test-requirements.txt
index 0fab264..7406e03 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,4 +1,4 @@
-hacking>=3.0.1,<3.1.0 # Apache-2.0
+hacking>=6.1.0,<6.2.0 # Apache-2.0
 
 bandit!=1.6.0,>=1.1.0 # Apache-2.0
 coverage>=4.0,!=4.4 # Apache-2.0