diff --git a/clirr-ignored-differences.xml b/clirr-ignored-differences.xml
new file mode 100644
index 000000000..a4a93043c
--- /dev/null
+++ b/clirr-ignored-differences.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- see http://mojo.codehaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
+
+<differences>
+  <difference>
+    <differenceType>8001</differenceType>
+    <className>com/google/api/client/googleapis/auth/clientlogin/**</className>
+  </difference>
+</differences>
diff --git a/owlbot.py b/owlbot.py
index 75a649885..d6da82cca 100644
--- a/owlbot.py
+++ b/owlbot.py
@@ -30,5 +30,6 @@
         "license-checks.xml",
         ".github/workflows/ci.yaml",
         ".github/workflows/samples.yaml",
+        "clirr-ignored-differences.xml"
     ]
 )