diff --git a/patches/server/0031-Fix-ProtocolLib-issues-on-Java-15.patch b/patches/server/0031-Fix-ProtocolLib-issues-on-Java-15.patch
new file mode 100644
index 0000000..4751185
--- /dev/null
+++ b/patches/server/0031-Fix-ProtocolLib-issues-on-Java-15.patch
@@ -0,0 +1,53 @@
+From c22c1ce7b69e6dd59e1af5636ef09bb33ec6a909 Mon Sep 17 00:00:00 2001
+From: Phoenix616 <max@themoep.de>
+Date: Mon, 19 Oct 2020 17:20:53 +0100
+Subject: [PATCH] Fix ProtocolLib issues on Java 15
+
+This replaces a lambda with an anonymous class to work around an issue
+ where ProtocolLib cannot access certain fields via reflections when
+ running on Java 15 due to lambdas now being considered hidden and not
+ accessible via reflections.
+
+Thanks to https://github.com/PimvanderLoos for figuring this out here:
+ https://github.com/dmulloy2/ProtocolLib/issues/978
+---
+ src/main/java/net/minecraft/server/NetworkManager.java | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/src/main/java/net/minecraft/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java
+index c9b36e6040..34e8e23955 100644
+--- a/src/main/java/net/minecraft/server/NetworkManager.java
++++ b/src/main/java/net/minecraft/server/NetworkManager.java
+@@ -285,9 +285,9 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
+             }
+             // Paper end
+         } else {
+-            this.channel.eventLoop().execute(() -> {
++            this.channel.eventLoop().execute(new Runnable() { public void run() { // Origami - remove lambda
+                 if (enumprotocol != enumprotocol1) {
+-                    this.setProtocol(enumprotocol);
++                    NetworkManager.this.setProtocol(enumprotocol); // Origami - remove lambda
+                 }
+ 
+                 // Paper start
+@@ -297,7 +297,7 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
+                 }
+                 try {
+                     // Paper end
+-                ChannelFuture channelfuture1 = this.channel.writeAndFlush(packet);
++                ChannelFuture channelfuture1 = NetworkManager.this.channel.writeAndFlush(packet); // Origami - remove lambda
+ 
+ 
+                 if (genericfuturelistener != null) {
+@@ -317,7 +317,7 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
+                     packet.onPacketDispatchFinish(player, null);
+                 }
+                 // Paper end
+-            });
++            }}); // Origami - remove lambda
+         }
+ 
+     }
+-- 
+2.25.1.windows.1
+