diff --git a/packages/backend/src/server/web/views/bios.pug b/packages/backend/src/server/web/views/bios.pug
index 91cfbcd395..6da9839af3 100644
--- a/packages/backend/src/server/web/views/bios.pug
+++ b/packages/backend/src/server/web/views/bios.pug
@@ -5,6 +5,7 @@ html
 	head
 		meta(charset='utf-8')
 		meta(name='application-name' content='Misskey')
+		meta(name='viewport' content='width=device-width, initial-scale=1.0')
 		title Misskey Repair Tool
 		style
 			include ../bios.css
diff --git a/packages/backend/src/server/web/views/cli.pug b/packages/backend/src/server/web/views/cli.pug
index ee3525e980..ad532b37d7 100644
--- a/packages/backend/src/server/web/views/cli.pug
+++ b/packages/backend/src/server/web/views/cli.pug
@@ -5,6 +5,7 @@ html
 	head
 		meta(charset='utf-8')
 		meta(name='application-name' content='Misskey')
+		meta(name='viewport' content='width=device-width, initial-scale=1.0')
 		title Misskey Cli
 		style
 			include ../cli.css
diff --git a/packages/backend/src/server/web/views/flush.pug b/packages/backend/src/server/web/views/flush.pug
index 81d034d820..987e37dc34 100644
--- a/packages/backend/src/server/web/views/flush.pug
+++ b/packages/backend/src/server/web/views/flush.pug
@@ -4,6 +4,7 @@ html
 	head
 		meta(charset='utf-8')
 		meta(name='application-name' content='Misskey')
+		meta(name='viewport' content='width=device-width, initial-scale=1.0')
 		title Flush Misskey
 		style.
 			* {