diff --git a/modules/statistics-provider-influx/pom.xml b/modules/statistics-provider-influx/pom.xml
index 89c3ee7ec17..0019c537789 100644
--- a/modules/statistics-provider-influx/pom.xml
+++ b/modules/statistics-provider-influx/pom.xml
@@ -16,6 +16,15 @@
     <checkstyle.skip>false</checkstyle.skip>
   </properties>
   <dependencies>
+    <dependency>
+      <groupId>com.google.guava</groupId>
+      <artifactId>guava</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>org.opencastproject</groupId>
       <artifactId>opencast-statistics-service-api</artifactId>
@@ -30,26 +39,6 @@
       <groupId>com.googlecode.json-simple</groupId>
       <artifactId>json-simple</artifactId>
     </dependency>
-    <dependency>
-      <groupId>commons-io</groupId>
-      <artifactId>commons-io</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>javax.servlet</groupId>
-      <artifactId>javax.servlet-api</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>javax.xml.bind</groupId>
-      <artifactId>jaxb-api</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>javax.ws.rs</groupId>
-      <artifactId>jsr311-api</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>org.osgi</groupId>
-      <artifactId>org.osgi.core</artifactId>
-    </dependency>
     <dependency>
       <groupId>org.osgi</groupId>
       <artifactId>org.osgi.compendium</artifactId>
@@ -76,16 +65,6 @@
         </exclusion>
       </exclusions>
     </dependency>
-    <dependency>
-      <groupId>log4j</groupId>
-      <artifactId>log4j</artifactId>
-      <scope>test</scope>
-    </dependency>
-    <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-log4j12</artifactId>
-      <scope>test</scope>
-    </dependency>
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
@@ -93,6 +72,10 @@
   </dependencies>
   <build>
     <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+      </plugin>
       <plugin>
         <groupId>org.apache.felix</groupId>
         <artifactId>maven-bundle-plugin</artifactId>
diff --git a/modules/statistics-provider-random/pom.xml b/modules/statistics-provider-random/pom.xml
index 81acbcb3e1a..0df9da9d5f0 100644
--- a/modules/statistics-provider-random/pom.xml
+++ b/modules/statistics-provider-random/pom.xml
@@ -26,18 +26,6 @@
       <artifactId>opencast-common</artifactId>
       <version>${project.version}</version>
     </dependency>
-    <dependency>
-      <groupId>com.googlecode.json-simple</groupId>
-      <artifactId>json-simple</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>commons-io</groupId>
-      <artifactId>commons-io</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>org.osgi</groupId>
-      <artifactId>org.osgi.core</artifactId>
-    </dependency>
     <dependency>
       <groupId>org.osgi</groupId>
       <artifactId>org.osgi.compendium</artifactId>
@@ -67,6 +55,10 @@
   </dependencies>
   <build>
     <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+      </plugin>
       <plugin>
         <groupId>org.apache.felix</groupId>
         <artifactId>maven-bundle-plugin</artifactId>
diff --git a/modules/statistics-service-api/pom.xml b/modules/statistics-service-api/pom.xml
index 1bd50abf0e7..6ad58b4750d 100644
--- a/modules/statistics-service-api/pom.xml
+++ b/modules/statistics-service-api/pom.xml
@@ -16,18 +16,17 @@
   </properties>
   <dependencies>
     <dependency>
-      <groupId>org.opencastproject</groupId>
-      <artifactId>opencast-common</artifactId>
-      <version>${project.version}</version>
+      <groupId>com.google.guava</groupId>
+      <artifactId>guava</artifactId>
     </dependency>
     <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-api</artifactId>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
       <scope>test</scope>
     </dependency>
     <dependency>
-      <groupId>log4j</groupId>
-      <artifactId>log4j</artifactId>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-api</artifactId>
       <scope>test</scope>
     </dependency>
     <dependency>
@@ -38,6 +37,17 @@
   </dependencies>
   <build>
     <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+        <extensions>true</extensions>
+        <configuration>
+          <ignoredUnusedDeclaredDependencies>
+            <!-- provide a logger for tests -->
+            <ignoredUnusedDeclaredDependency>org.slf4j:slf4j-log4j12</ignoredUnusedDeclaredDependency>
+          </ignoredUnusedDeclaredDependencies>
+        </configuration>
+      </plugin>
       <plugin>
         <groupId>org.apache.felix</groupId>
         <artifactId>maven-bundle-plugin</artifactId>
diff --git a/modules/statistics-service-impl/pom.xml b/modules/statistics-service-impl/pom.xml
index dcaf6e52090..612edeac0fe 100644
--- a/modules/statistics-service-impl/pom.xml
+++ b/modules/statistics-service-impl/pom.xml
@@ -15,6 +15,11 @@
     <checkstyle.skip>false</checkstyle.skip>
   </properties>
   <dependencies>
+    <dependency>
+      <groupId>org.opencastproject</groupId>
+      <artifactId>opencast-common</artifactId>
+      <version>${project.version}</version>
+    </dependency>
     <dependency>
       <groupId>org.opencastproject</groupId>
       <artifactId>opencast-statistics-service-api</artifactId>
@@ -24,26 +29,10 @@
       <groupId>com.googlecode.json-simple</groupId>
       <artifactId>json-simple</artifactId>
     </dependency>
-    <dependency>
-      <groupId>commons-io</groupId>
-      <artifactId>commons-io</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>javax.servlet</groupId>
-      <artifactId>javax.servlet-api</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>javax.xml.bind</groupId>
-      <artifactId>jaxb-api</artifactId>
-    </dependency>
     <dependency>
       <groupId>javax.ws.rs</groupId>
       <artifactId>jsr311-api</artifactId>
     </dependency>
-    <dependency>
-      <groupId>org.osgi</groupId>
-      <artifactId>org.osgi.core</artifactId>
-    </dependency>
     <dependency>
       <groupId>org.osgi</groupId>
       <artifactId>org.osgi.compendium</artifactId>
@@ -55,6 +44,10 @@
   </dependencies>
   <build>
     <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+      </plugin>
       <plugin>
         <groupId>org.apache.felix</groupId>
         <artifactId>maven-bundle-plugin</artifactId>
diff --git a/modules/statistics-service-remote/pom.xml b/modules/statistics-service-remote/pom.xml
index bedf2039a80..c745ece1f74 100644
--- a/modules/statistics-service-remote/pom.xml
+++ b/modules/statistics-service-remote/pom.xml
@@ -15,6 +15,10 @@
     <checkstyle.skip>false</checkstyle.skip>
   </properties>
   <dependencies>
+    <dependency>
+      <groupId>com.googlecode.json-simple</groupId>
+      <artifactId>json-simple</artifactId>
+    </dependency>
     <dependency>
       <groupId>org.opencastproject</groupId>
       <artifactId>opencast-common</artifactId>
@@ -26,36 +30,39 @@
       <version>${project.version}</version>
     </dependency>
     <dependency>
-      <groupId>commons-io</groupId>
-      <artifactId>commons-io</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>javax.servlet</groupId>
-      <artifactId>javax.servlet-api</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>javax.xml.bind</groupId>
-      <artifactId>jaxb-api</artifactId>
+      <groupId>org.apache.httpcomponents</groupId>
+      <artifactId>httpclient-osgi</artifactId>
     </dependency>
     <dependency>
-      <groupId>javax.ws.rs</groupId>
-      <artifactId>jsr311-api</artifactId>
+      <groupId>org.apache.httpcomponents</groupId>
+      <artifactId>httpcore-osgi</artifactId>
     </dependency>
     <dependency>
-      <groupId>org.osgi</groupId>
-      <artifactId>org.osgi.core</artifactId>
+      <groupId>org.codehaus.jettison</groupId>
+      <artifactId>jettison</artifactId>
+      <version>1.3.1</version>
+      <exclusions>
+        <exclusion>
+          <groupId>stax</groupId>
+          <artifactId>stax-api</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
     <dependency>
-      <groupId>org.osgi</groupId>
-      <artifactId>org.osgi.compendium</artifactId>
+      <groupId>javax.servlet</groupId>
+      <artifactId>javax.servlet-api</artifactId>
     </dependency>
     <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-api</artifactId>
+      <groupId>javax.ws.rs</groupId>
+      <artifactId>jsr311-api</artifactId>
     </dependency>
   </dependencies>
   <build>
     <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+      </plugin>
       <plugin>
         <groupId>org.apache.felix</groupId>
         <artifactId>maven-bundle-plugin</artifactId>
diff --git a/modules/workflow-condition-parser/pom.xml b/modules/workflow-condition-parser/pom.xml
index 3725df4c609..df402dfaaa2 100644
--- a/modules/workflow-condition-parser/pom.xml
+++ b/modules/workflow-condition-parser/pom.xml
@@ -31,6 +31,10 @@
   </dependencies>
   <build>
     <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+      </plugin>
       <plugin>
         <groupId>org.antlr</groupId>
         <artifactId>antlr4-maven-plugin</artifactId>