diff --git a/CHANGES b/CHANGES
index 212148fe1..0c49f93f4 100644
--- a/CHANGES
+++ b/CHANGES
@@ -36,10 +36,12 @@ Platform 3.27
   - Objenesis to 3.3 (was 3.2)
   - servlet-api to 6.0.0 (was 5.0.0)
   - slf4j to 2.0.16 (was 2.0.9)
+  - spotbugs-annotations to 4.9.1 (was 4.7.0)
 
 * Maven plugin upgrades
 
   - JaCoCo to 0.8.12 (was 0.8.8)
+  - spotbugs-maven-plugin to 4.9.1.0 (was 4.8.6.6)
 
 Platform 3.24
 
diff --git a/library/pom.xml b/library/pom.xml
index 1906f530f..29cd63acf 100644
--- a/library/pom.xml
+++ b/library/pom.xml
@@ -425,7 +425,7 @@
                 <plugin>
                     <groupId>com.github.spotbugs</groupId>
                     <artifactId>spotbugs-maven-plugin</artifactId>
-                    <version>4.8.6.6</version>
+                    <version>4.9.1.0</version>
                     <configuration>
                         <skip>${platform.check.skip-spotbugs}</skip>
                         <jvmArgs>-Xmx${platform.build.jvmsize}</jvmArgs>
@@ -1197,7 +1197,7 @@
             <dependency>
                 <groupId>com.github.spotbugs</groupId>
                 <artifactId>spotbugs-annotations</artifactId>
-                <version>4.7.0</version>
+                <version>4.9.1</version>
             </dependency>
 
             <!-- jmh -->