diff --git a/Gemfile.lock b/Gemfile.lock
index 7833cfce..92336783 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -119,7 +119,7 @@ GEM
     docile (1.1.5)
     domain_name (0.5.20170404)
       unf (>= 0.0.5, < 1.0.0)
-    dotenv (2.2.1)
+    dotenv (2.4.0)
     ebnf (1.0.0)
       rdf (~> 1.1)
       sxp (~> 0.1, >= 0.1.3)