diff --git a/gradle.properties b/gradle.properties
index 0e3d2bc..7f878bf 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -11,7 +11,7 @@ pivotalGemFireVersion=9.10.6
 # The Spring Boot & Spring Session version are the only required version properties.
 # The other Spring version properties are for overriding/testing purposes.
 springVersion=5.2.13.RELEASE
-springBootVersion=2.3.7.RELEASE
+springBootVersion=2.3.9.RELEASE
 springDataCommonsVersion=2.3.6.RELEASE
 springDataGemFireVersion=2.3.6.RELEASE
 springDataGeodeVersion=2.3.6.RELEASE