diff --git a/pom.xml b/pom.xml
index 508f741a..561e6c74 100644
--- a/pom.xml
+++ b/pom.xml
@@ -66,11 +66,17 @@
 			<groupId>org.bouncycastle</groupId>
 			<artifactId>bcprov-jdk15on</artifactId>
 			<version>1.70</version>
+		</dependency>
+			<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>slf4j-api</artifactId>
+			<version>1.7.25</version>
 		</dependency>
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-simple</artifactId>
 			<version>1.7.25</version>
+			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.zeromq</groupId>