diff --git a/ees/pom.xml b/ees/pom.xml
index 260d0bd1..aa8c9247 100644
--- a/ees/pom.xml
+++ b/ees/pom.xml
@@ -58,7 +58,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-gpg-plugin</artifactId>
-        <version>1.5</version>
+        <version>3.1.0</version>
         <executions>
           <execution>
             <id>sign-artifacts</id>
@@ -118,7 +118,7 @@
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.2.3</version>
+      <version>1.4.14</version>
     </dependency>
     <!-- for JSON-style toString() of objects -->
     <dependency>
@@ -136,7 +136,7 @@
     <dependency>
       <groupId>com.google.inject</groupId>
       <artifactId>guice</artifactId>
-      <version>5.1.0</version>
+      <version>7.0.0</version>
     </dependency>
     <!-- for easy CSV parsing -->
     <dependency>
@@ -153,7 +153,7 @@
     <dependency>
       <groupId>org.geotools</groupId>
       <artifactId>gt-epsg-hsql</artifactId>
-      <version>20.5</version>
+      <version>29.1</version>
     </dependency>
   </dependencies>