diff --git a/.gear/check b/.gear/check
new file mode 100755
index 000000000..5cdba9a95
--- /dev/null
+++ b/.gear/check
@@ -0,0 +1,23 @@
+#!/bin/bash -efu
+
+RET=0
+
+f=tools/server/public/index.html.gz
+email=$(git log -1 --pretty=%ae -- "$f")
+if [[ $email != *@altlinux.org ]]; then
+    echo >&2 "$f is not updated by ALT. Perhaps, run .gear/generate"
+    (set -x; git l -1 -- "$f")
+    RET=1
+fi
+
+ts_f=$(git log -1 --date=unix --pretty='%cd' "$f")
+s=tools/server/webui
+ts_s=$(git log -1 --date=unix --pretty='%cd' "$s")
+if (( ts_f < ts_s )); then
+    echo >&2 "$f is not updated after $s update."
+    (set -x; git l -1 -- "$f")
+    (set -x; git l -1 -- "$s")
+    RET=1
+fi
+
+exit $RET