diff --git a/Gemfile.lock b/Gemfile.lock
index b7e5f266..9004673f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -549,8 +549,8 @@ GEM
       concurrent-ruby
       faraday
     sexp_processor (4.16.1)
-    shoulda-matchers (4.5.1)
-      activesupport (>= 4.2.0)
+    shoulda-matchers (5.1.0)
+      activesupport (>= 5.2.0)
     simple_po_parser (1.1.6)
     simplecov (0.21.2)
       docile (~> 1.1)