diff --git a/pom.xml b/pom.xml
index 3527f68..59455f1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -79,7 +79,7 @@
         <maven.javadoc.version>3.10.0</maven.javadoc.version>
         <maven.assembly.version>3.7.1</maven.assembly.version>
         <maven.plugin.plugin.version>3.9.0</maven.plugin.plugin.version>
-        <maven.gpg.version>3.2.5</maven.gpg.version>
+        <maven.gpg.version>3.2.6</maven.gpg.version>
         <maven.assembly.version>3.7.1</maven.assembly.version>
         <sonatype.nexus.central>0.5.0</sonatype.nexus.central>
 
@@ -95,7 +95,7 @@
 
         <!--   Build tools' properties     -->
         <spotbugs.version>4.8.6</spotbugs.version>
-        <maven.spotbugs.version>4.8.6.3</maven.spotbugs.version>
+        <maven.spotbugs.version>4.8.6.4</maven.spotbugs.version>
         <maven.checkstyle.version>3.5.0</maven.checkstyle.version>
 
         <it.skip>true</it.skip>