diff --git a/tools/interop_matrix/client_matrix.py b/tools/interop_matrix/client_matrix.py
index 790cd2df527..73dec5d50ee 100644
--- a/tools/interop_matrix/client_matrix.py
+++ b/tools/interop_matrix/client_matrix.py
@@ -120,7 +120,7 @@ LANG_RELEASE_MATRIX = {
             ('v1.44.0', ReleaseInfo()),
             ('v1.46.2', ReleaseInfo()),
             ('v1.47.1', ReleaseInfo()),
-            ('v1.48.0', ReleaseInfo()),
+            ('v1.48.1', ReleaseInfo()),
         ]),
     'go':
         OrderedDict([
@@ -425,7 +425,7 @@ LANG_RELEASE_MATRIX = {
                 ('v1.47.1',
                  ReleaseInfo(runtimes=['python'],
                              testcases_file='python__master')),
-                ('v1.48.0',
+                ('v1.48.1',
                  ReleaseInfo(runtimes=['python'],
                              testcases_file='python__master')),
             ]),
@@ -502,7 +502,7 @@ LANG_RELEASE_MATRIX = {
             ('v1.44.0', ReleaseInfo()),
             ('v1.46.2', ReleaseInfo()),
             ('v1.47.1', ReleaseInfo()),
-            ('v1.48.0', ReleaseInfo()),
+            ('v1.48.1', ReleaseInfo()),
         ]),
     'php':
         OrderedDict([
@@ -550,7 +550,7 @@ LANG_RELEASE_MATRIX = {
             ('v1.44.0', ReleaseInfo()),
             ('v1.46.2', ReleaseInfo()),
             ('v1.47.1', ReleaseInfo()),
-            ('v1.48.0', ReleaseInfo()),
+            ('v1.48.1', ReleaseInfo()),
         ]),
     'csharp':
         OrderedDict([