diff --git a/jsch-agent-proxy-sshj/pom.xml b/jsch-agent-proxy-sshj/pom.xml
index e520298..6c9e85d 100644
--- a/jsch-agent-proxy-sshj/pom.xml
+++ b/jsch-agent-proxy-sshj/pom.xml
@@ -14,7 +14,7 @@
 
   <dependencies>
     <dependency>
-      <groupId>net.schmizz</groupId>
+      <groupId>com.hierynomus</groupId>
       <artifactId>sshj</artifactId>
       <version>[0.8.1,)</version>
     </dependency>
diff --git a/jsch-agent-proxy-usocket-nc/src/main/java/com/jcraft/jsch/agentproxy/usocket/NCUSocketFactory.java b/jsch-agent-proxy-usocket-nc/src/main/java/com/jcraft/jsch/agentproxy/usocket/NCUSocketFactory.java
index 2a24efa..78f6e28 100644
--- a/jsch-agent-proxy-usocket-nc/src/main/java/com/jcraft/jsch/agentproxy/usocket/NCUSocketFactory.java
+++ b/jsch-agent-proxy-usocket-nc/src/main/java/com/jcraft/jsch/agentproxy/usocket/NCUSocketFactory.java
@@ -43,12 +43,13 @@ public NCUSocketFactory() throws AgentProxyException {
     StringBuilder sb = new StringBuilder();
     try {
       p = Runtime.getRuntime().exec("nc -h");
-      InputStream is = p.getErrorStream();
+      InputStream is = p.getErrorStream().available() > 0 ? p.getErrorStream() : p.getInputStream();
       byte[] buf = new byte[1024];
       int i = 0;
       while((i = is.read(buf, 0, buf.length))>0){
         sb.append(new String(buf, 0, i));
       }
+      is.close();
     }
     catch(IOException e){
     }