diff --git a/pom.xml b/pom.xml
index cc40f463f..40f3febae 100644
--- a/pom.xml
+++ b/pom.xml
@@ -125,8 +125,8 @@ Copyright (c) 2012 - Jeremy Long
         <!-- new versions of lucene are compiled with JDK 1.7 and cannot be used ubiquitously in Jenkins
         thus, we cannot upgrade beyond 4.7.2 -->
         <apache.lucene.version>4.7.2</apache.lucene.version>
-        <slf4j.version>1.7.13</slf4j.version>
-        <logback.version>1.1.3</logback.version>
+        <slf4j.version>1.7.16</slf4j.version>
+        <logback.version>1.1.5</logback.version>
         <reporting.checkstyle-plugin.version>2.17</reporting.checkstyle-plugin.version>
         <reporting.cobertura-plugin.version>2.7</reporting.cobertura-plugin.version>
         <reporting.pmd-plugin.version>3.6</reporting.pmd-plugin.version>
@@ -175,7 +175,7 @@ Copyright (c) 2012 - Jeremy Long
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-compiler-plugin</artifactId>
-                    <version>3.3</version>
+                    <version>3.5.1</version>
                 </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>