diff --git a/benchmarks/tpcc/pom.xml b/benchmarks/tpcc/pom.xml
index 205207bbc..f52b7ade4 100644
--- a/benchmarks/tpcc/pom.xml
+++ b/benchmarks/tpcc/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.11</version>
+    <version>4.0.5</version>
     <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>com.google.cloud.spanner</groupId>
diff --git a/samples/java/spring-data-jpa/pom.xml b/samples/java/spring-data-jpa/pom.xml
index 9483a16d8..3e9f96b0f 100644
--- a/samples/java/spring-data-jpa/pom.xml
+++ b/samples/java/spring-data-jpa/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.11</version>
+    <version>4.0.5</version>
     <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>com.google.cloud.spanner</groupId>