diff --git a/appengine/standard_python37/spanner/requirements.txt b/appengine/standard_python37/spanner/requirements.txt
index 100b6f5b3ced..1d3be1130459 100644
--- a/appengine/standard_python37/spanner/requirements.txt
+++ b/appengine/standard_python37/spanner/requirements.txt
@@ -1,2 +1,2 @@
-google-cloud-spanner==1.15.0
+google-cloud-spanner==1.15.1
 Flask==1.1.1
diff --git a/functions/spanner/requirements.txt b/functions/spanner/requirements.txt
index 1aab6b267e58..8d98fb3b3662 100644
--- a/functions/spanner/requirements.txt
+++ b/functions/spanner/requirements.txt
@@ -1 +1 @@
-google-cloud-spanner==1.15.0
+google-cloud-spanner==1.15.1
diff --git a/spanner/cloud-client/requirements.txt b/spanner/cloud-client/requirements.txt
index b122372d96e8..1397fa60e290 100644
--- a/spanner/cloud-client/requirements.txt
+++ b/spanner/cloud-client/requirements.txt
@@ -1,2 +1,2 @@
-google-cloud-spanner==1.15.0
+google-cloud-spanner==1.15.1
 futures==3.3.0; python_version < "3"