diff --git a/tools/interop_matrix/client_matrix.py b/tools/interop_matrix/client_matrix.py
index 7649eec6be4..25f0df1c124 100644
--- a/tools/interop_matrix/client_matrix.py
+++ b/tools/interop_matrix/client_matrix.py
@@ -103,6 +103,7 @@ LANG_RELEASE_MATRIX = {
         ('v1.23.0', ReleaseInfo()),
         ('v1.24.0', ReleaseInfo()),
         ('v1.25.0', ReleaseInfo()),
+        ('v1.26.0', ReleaseInfo()),
     ]),
     'go':
     OrderedDict(
@@ -224,6 +225,7 @@ LANG_RELEASE_MATRIX = {
         ('v1.23.0', ReleaseInfo()),
         ('v1.24.0', ReleaseInfo()),
         ('v1.25.0', ReleaseInfo()),
+        ('v1.26.0', ReleaseInfo()),
     ]),
     'node':
     OrderedDict([
@@ -281,6 +283,7 @@ LANG_RELEASE_MATRIX = {
         # TODO: https://github.com/grpc/grpc/issues/18262.
         # If you are not encountering the error in above issue
         # go ahead and upload the docker image for new releases.
+        ('v1.26.0', ReleaseInfo()),
     ]),
     'php':
     OrderedDict([
@@ -310,6 +313,7 @@ LANG_RELEASE_MATRIX = {
         ('v1.23.0', ReleaseInfo()),
         ('v1.24.0', ReleaseInfo()),
         ('v1.25.0', ReleaseInfo()),
+        ('v1.26.0', ReleaseInfo()),
     ]),
     'csharp':
     OrderedDict([
@@ -345,5 +349,6 @@ LANG_RELEASE_MATRIX = {
         ('v1.23.0', ReleaseInfo()),
         ('v1.24.0', ReleaseInfo()),
         ('v1.25.0', ReleaseInfo()),
+        ('v1.26.0', ReleaseInfo()),
     ]),
 }