diff --git a/build.gradle b/build.gradle
index 964024a3..36448d44 100644
--- a/build.gradle
+++ b/build.gradle
@@ -22,7 +22,7 @@ if (ENV.BUILD_NUMBER) {
 	build = "release #${ENV.BUILD_NUMBER}"
 	version = baseVersion + '.' + ENV.BUILD_NUMBER
 } else {
-	version = baseVersion + '-forge.31'
+	version = baseVersion + '-forge.34'
 }
 
 configurations {
diff --git a/src/main/java/net/fabricmc/loom/providers/MinecraftMappedProvider.java b/src/main/java/net/fabricmc/loom/providers/MinecraftMappedProvider.java
index ddbddc72..b9484639 100644
--- a/src/main/java/net/fabricmc/loom/providers/MinecraftMappedProvider.java
+++ b/src/main/java/net/fabricmc/loom/providers/MinecraftMappedProvider.java
@@ -160,18 +160,11 @@ public class MinecraftMappedProvider extends DependencyProvider {
 					}
 
 					for (Map.Entry<String, Attributes> forgeEntry : forgeManifest.getEntries().entrySet()) {
-						if (!forgeEntry.getKey().endsWith(".class")) {
+						if (forgeEntry.getKey().endsWith("/")) {
 							minecraftManifest.getEntries().put(forgeEntry.getKey(), forgeEntry.getValue());
 						}
 					}
 
-					Attributes javafmlmod = new Attributes();
-					javafmlmod.put("Implementation-Version", version.getForgeVersion());
-					Attributes mclanguageprovider = new Attributes();
-					mclanguageprovider.put("Implementation-Version", version.getMinecraftVersion());
-					minecraftManifest.getEntries().putIfAbsent("net/minecraftforge/fml/javafmlmod/", javafmlmod);
-					minecraftManifest.getEntries().putIfAbsent("net/minecraftforge/fml/mclanguageprovider/", mclanguageprovider);
-
 					Files.delete(manifestPath);
 
 					try (OutputStream out = Files.newOutputStream(manifestPath)) {