diff --git a/internal/updater/updater.go b/internal/updater/updater.go
index 6d1c9793..c8820264 100644
--- a/internal/updater/updater.go
+++ b/internal/updater/updater.go
@@ -24,7 +24,7 @@ import (
 )
 
 const (
-	timeout                       = 20 * time.Second
+	timeout                       = 120 * time.Second
 	latestReleaseURL              = "https://api.github.com/repos/evilmartians/lefthook/releases/latest"
 	checksumsFilename             = "lefthook_checksums.txt"
 	checksumFields                = 2
diff --git a/lefthook.yml b/lefthook.yml
index 144fcd5d..e7583701 100644
--- a/lefthook.yml
+++ b/lefthook.yml
@@ -1,3 +1,4 @@
+assert_lefthook_installed: true
 skip_lfs: true
 
 pre-commit: