diff --git a/Gemfile.lock b/Gemfile.lock
index b6fd3069..70007858 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -294,8 +294,8 @@ GEM
       addressable (~> 2.7)
     leaflet-rails (1.7.0)
       rails (>= 4.2.0)
-    letter_opener (1.7.0)
-      launchy (~> 2.2)
+    letter_opener (1.8.1)
+      launchy (>= 2.2, < 3)
     letter_opener_web (2.0.0)
       actionmailer (>= 5.2)
       letter_opener (~> 1.7)