diff --git a/README.org b/README.org
index 65c8304..662d71b 100644
--- a/README.org
+++ b/README.org
@@ -4401,6 +4401,7 @@ static const Rule rules[] = {
         RULE(.class = "PrismLauncher", .tags = 1 << 7)
         RULE(.class = "antimicrox", .tags = 1 << 7)
         RULE(.class = "ProtonUp-Qt", .tags = 1 << 7)
+        RULE(.class = "heroic", .tags = 1 << 7)
         RULE(.class = "Thunar", .tags = 1 << 8)
         RULE(.class = "Syncthing GTK", .tags = 1 << 8)
         RULE(.class = "Nyrna", .tags = 1 << 8)
diff --git a/config.def.h b/config.def.h
index 1b9b4c1..7a5693e 100644
--- a/config.def.h
+++ b/config.def.h
@@ -521,6 +521,7 @@ static const Rule rules[] = {
         RULE(.class = "PrismLauncher", .tags = 1 << 7)
         RULE(.class = "antimicrox", .tags = 1 << 7)
         RULE(.class = "ProtonUp-Qt", .tags = 1 << 7)
+        RULE(.class = "heroic", .tags = 1 << 7)
         RULE(.class = "Thunar", .tags = 1 << 8)
         RULE(.class = "Syncthing GTK", .tags = 1 << 8)
         RULE(.class = "Nyrna", .tags = 1 << 8)