readme: use non-expiring discord invite
diff --git a/README.md b/README.md
index 6da14d5..ceff09b 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@
 
 We have a discord server to discuss sketch.
 
-Join if you want! https://discord.gg/YNUSuVm4
+Join if you want! https://discord.gg/R82YagTASx
 
 ## Development