diff --git a/elisp-check.el b/elisp-check.el
index a2b03b2..d68d1c5 100644
--- a/elisp-check.el
+++ b/elisp-check.el
@@ -206,7 +206,8 @@ documentation on the usage of PREFIX and KNOWN-BUFFERS."
     (dolist (package packages)
       (elisp-check-log "Installing: %s" package)
       (elisp-check-condition-case error
-          (package-install package)
+          (let ((package-check-signature nil))
+            (package-install package))
         (error
          (push (elisp-check-format-error error) errors))))
     (when errors