diff --git a/pom.xml b/pom.xml
index f03e31d3..ce0ad000 100644
--- a/pom.xml
+++ b/pom.xml
@@ -273,7 +273,7 @@
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-xml</artifactId>
-      <version>3.0.0</version>
+      <version>4.0.4</version>
     </dependency>
     <dependency>
       <!-- bump this and run src/build/find-transitive-eclipse-updates.sh to update eclipse deps -->
@@ -300,7 +300,7 @@
     <dependency>
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-simple</artifactId>
-      <version>1.7.36</version>
+      <version>2.0.13</version>
       <scope>test</scope>
     </dependency>
   </dependencies>
@@ -333,7 +333,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-scm-publish-plugin</artifactId>
-        <version>3.2.1</version>
+        <version>3.3.0</version>
         <configuration>
           <scmBranch>gh-pages</scmBranch>
           <tryUpdate>true</tryUpdate>