diff --git a/mainfests/7.1-pre1a.json b/mainfests/7.1-pre1a.json
new file mode 100644
index 0000000..d4d85aa
--- /dev/null
+++ b/mainfests/7.1-pre1a.json
@@ -0,0 +1,221 @@
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+            },
+            "extract": {
+                "exclude": [
+                    "META-INF/"
+                ]
+            },
+            "name": "net.java.jinput:jinput-platform:2.0.5",
+            "natives": {
+                "linux": "natives-linux",
+                "osx": "natives-osx",
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+        },
+        {
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+            "extract": {
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+    ],
+    "mainClass": "net.minecraft.launchwrapper.Launch",
+    "minecraftArguments": "${auth_player_name} ${auth_session} --gameDir ${game_directory} --assetsDir ${game_assets}",
+    "minimumLauncherVersion": 7,
+    "releaseTime": "2011-07-07T22:00:00+00:00",
+    "time": "2011-07-07T22:00:00+00:00",
+    "type": "old_beta"
+}
\ No newline at end of file