diff --git a/tools/interop_matrix/client_matrix.py b/tools/interop_matrix/client_matrix.py
index 6bcac56f149..4c21b7aafce 100644
--- a/tools/interop_matrix/client_matrix.py
+++ b/tools/interop_matrix/client_matrix.py
@@ -161,8 +161,7 @@ LANG_RELEASE_MATRIX = {
          ReleaseInfo(runtimes=['java_oracle8'], testcases_file='java__v1.0.3')),
         ('v1.6.1',
          ReleaseInfo(runtimes=['java_oracle8'], testcases_file='java__v1.0.3')),
-        ('v1.7.1',
-         ReleaseInfo(testcases_file='java__v1.0.3')),
+        ('v1.7.1', ReleaseInfo(testcases_file='java__v1.0.3')),
         ('v1.8.0',
          ReleaseInfo(runtimes=['java_oracle8'], testcases_file='java__v1.0.3')),
         ('v1.9.1',
@@ -171,18 +170,14 @@ LANG_RELEASE_MATRIX = {
          ReleaseInfo(runtimes=['java_oracle8'], testcases_file='java__v1.0.3')),
         ('v1.11.0',
          ReleaseInfo(runtimes=['java_oracle8'], testcases_file='java__v1.0.3')),
-        ('v1.12.1',
-         ReleaseInfo(testcases_file='java__v1.0.3')),
-        ('v1.13.2',
-         ReleaseInfo(testcases_file='java__v1.0.3')),
+        ('v1.12.1', ReleaseInfo(testcases_file='java__v1.0.3')),
+        ('v1.13.2', ReleaseInfo(testcases_file='java__v1.0.3')),
         ('v1.14.0',
          ReleaseInfo(runtimes=['java_oracle8'], testcases_file='java__v1.0.3')),
-        ('v1.15.1',
-         ReleaseInfo(testcases_file='java__v1.0.3')),
+        ('v1.15.1', ReleaseInfo(testcases_file='java__v1.0.3')),
         ('v1.16.1',
          ReleaseInfo(runtimes=['java_oracle8'], testcases_file='java__v1.0.3')),
-        ('v1.17.2',
-         ReleaseInfo(testcases_file='java__v1.0.3')),
+        ('v1.17.2', ReleaseInfo(testcases_file='java__v1.0.3')),
         ('v1.18.0',
          ReleaseInfo(runtimes=['java_oracle8'], testcases_file='java__v1.0.3')),
         ('v1.19.0',