diff --git a/Gemfile.lock b/Gemfile.lock
index 7e4eeb07c..d424c6214 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -101,7 +101,7 @@ GEM
     cookiejar (0.3.3)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
-    crass (1.0.5)
+    crass (1.0.6)
     cucumber (3.1.0)
       builder (>= 2.1.2)
       cucumber-core (~> 3.1.0)
@@ -370,7 +370,7 @@ GEM
     letter_opener (1.6.0)
       launchy (~> 2.2)
     libv8 (3.16.14.19)
-    loofah (2.3.1)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
@@ -449,8 +449,8 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.4)
-      loofah (~> 2.2, >= 2.2.2)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     rails_autoscale_agent (0.9.1)
     railties (5.1.5)
       actionpack (= 5.1.5)