diff --git a/modules/apps/pycharm.nix b/modules/apps/pycharm.nix
index 4b8ac6b..a796e5d 100644
--- a/modules/apps/pycharm.nix
+++ b/modules/apps/pycharm.nix
@@ -3,6 +3,7 @@
     (pkgsUnstable.jetbrains.pycharm-professional.override {
       vmopts = ''
         -Dawt.toolkit.name=WLToolkit
+        -Xmx8G
       '';
     })
   ];