diff --git a/Gemfile.lock b/Gemfile.lock
index 36a3a65f6..254367529 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -335,9 +335,9 @@ GEM
       redis (>= 3.0.5)
     memory_profiler (0.9.12)
     method_source (0.9.2)
-    microformats (4.0.7)
-      json
-      nokogiri
+    microformats (4.0.9)
+      json (~> 2.1)
+      nokogiri (~> 1.8, >= 1.8.3)
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)