diff --git a/apps/routerconsole/java/src/net/i2p/router/update/PluginUpdateRunner.java b/apps/routerconsole/java/src/net/i2p/router/update/PluginUpdateRunner.java
index d72c494ce7..2970c60962 100644
--- a/apps/routerconsole/java/src/net/i2p/router/update/PluginUpdateRunner.java
+++ b/apps/routerconsole/java/src/net/i2p/router/update/PluginUpdateRunner.java
@@ -28,6 +28,7 @@ import net.i2p.util.OrderedProperties;
 import net.i2p.util.PortMapper;
 import net.i2p.util.SecureDirectory;
 import net.i2p.util.SecureFile;
+import net.i2p.util.SystemVersion;
 import net.i2p.util.VersionComparator;
 
 
@@ -475,6 +476,15 @@ class PluginUpdateRunner extends UpdateRunner {
                     statusDone("<b>" + _t("Plugin requires Jetty version {0} or lower", "8.9999") + "</b>");
                     return;
                 }
+                if (SystemVersion.isJava9()) {
+                    blacklistVersion = PluginStarter.java9Blacklist.get(appName);
+                    if (blacklistVersion != null &&
+                        VersionComparator.comp(version, blacklistVersion) <= 0) {
+                        to.delete();
+                        statusDone("<b>" + _t("Plugin requires Java version {0} or lower", "8.9999") + "</b>");
+                        return;
+                    }
+                }
                 maxVersion = PluginStarter.stripHTML(props, "max-jetty-version");
                 if (maxVersion != null &&
                     VersionComparator.comp(maxVersion, oldVersion) < 0) {
diff --git a/apps/routerconsole/java/src/net/i2p/router/web/PluginStarter.java b/apps/routerconsole/java/src/net/i2p/router/web/PluginStarter.java
index a0114bbad6..cf354d6820 100644
--- a/apps/routerconsole/java/src/net/i2p/router/web/PluginStarter.java
+++ b/apps/routerconsole/java/src/net/i2p/router/web/PluginStarter.java
@@ -36,6 +36,7 @@ import net.i2p.util.I2PAppThread;
 import net.i2p.util.Log;
 import net.i2p.util.PortMapper;
 import net.i2p.util.SimpleTimer2;
+import net.i2p.util.SystemVersion;
 import net.i2p.util.Translate;
 import net.i2p.util.VersionComparator;
 
@@ -78,12 +79,28 @@ public class PluginStarter implements Runnable {
     public static final Map<String, String> jetty9Blacklist;
 
     static {
-        Map<String, String> map = new HashMap<String, String>(4);
+        Map<String, String> map = new HashMap<String, String>(2);
         map.put("i2pbote", "0.4.5");
         map.put("BwSchedule", "0.0.36");
         jetty9Blacklist = Collections.unmodifiableMap(map);
     }
 
+    /**
+     *  Plugin name to plugin version of plugins that do not work
+     *  with Java 9+
+     *  Unmodifiable.
+     *
+     *  @since 0.9.30
+     */
+    public static final Map<String, String> java9Blacklist;
+
+    static {
+        Map<String, String> map = new HashMap<String, String>(2);
+        map.put("01_neodatis", "2.1-2.14-209-17");
+        map.put("02_seedless", "0.1.7-0.1.12");
+        java9Blacklist = Collections.unmodifiableMap(map);
+    }
+
     public PluginStarter(RouterContext ctx) {
         _context = ctx;
     }
@@ -362,6 +379,18 @@ public class PluginStarter implements Runnable {
             throw new Exception(foo);
         }
 
+        if (SystemVersion.isJava9()) {
+            blacklistVersion = java9Blacklist.get(appName);
+            if (blacklistVersion != null &&
+                VersionComparator.comp(curVersion, blacklistVersion) <= 0) {
+                String foo = "Plugin " + appName + " requires Jetty version 8.9999 or lower";
+                log.error(foo);
+                disablePlugin(appName);
+                foo = gettext("Plugin requires Java version {0} or lower", "8.9999", ctx);
+                throw new Exception(foo);
+            }
+        }
+
         String maxVersion = stripHTML(props, "max-jetty-version");
         if (maxVersion != null &&
             VersionComparator.comp(maxVersion, jVersion) < 0) {
diff --git a/history.txt b/history.txt
index 20ba7b1649..a932c289f7 100644
--- a/history.txt
+++ b/history.txt
@@ -1,3 +1,6 @@
+2018-09-23 zzz
+ * Plugins: Blacklist neodatis and seedless for Java 9+ (ticket #2295)
+
 2018-09-22 zzz
  * NTCP:
    - Fix handling of multiple connections
diff --git a/router/java/src/net/i2p/router/RouterVersion.java b/router/java/src/net/i2p/router/RouterVersion.java
index ba403a9f3e..ae4c8ac3a4 100644
--- a/router/java/src/net/i2p/router/RouterVersion.java
+++ b/router/java/src/net/i2p/router/RouterVersion.java
@@ -18,7 +18,7 @@ public class RouterVersion {
     /** deprecated */
     public final static String ID = "Monotone";
     public final static String VERSION = CoreVersion.VERSION;
-    public final static long BUILD = 5;
+    public final static long BUILD = 6;
 
     /** for example "-test" */
     public final static String EXTRA = "-rc";