diff --git a/Gemfile b/Gemfile
index d8ceae4ae..1e0553f3e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -22,7 +22,7 @@ gem 'net-pop', require: false
 gem 'pg'
 
 gem 'bootstrap-sass', '~> 3.4.1'
-gem 'haml', '~> 5.0'
+gem 'haml', '~> 6.3'
 gem 'jbuilder'
 gem 'jquery-datatables-rails'
 gem 'jquery-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index 78402bdda..64315b802 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -224,8 +224,9 @@ GEM
       guard (~> 2.1)
       guard-compat (~> 1.1)
       rspec (>= 2.99.0, < 4.0)
-    haml (5.2.2)
-      temple (>= 0.8.0)
+    haml (6.3.0)
+      temple (>= 0.8.2)
+      thor
       tilt
     haml-rails (2.1.0)
       actionpack (>= 5.1)
@@ -490,9 +491,9 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
-    temple (0.10.0)
+    temple (0.10.3)
     thor (1.3.2)
-    tilt (2.0.11)
+    tilt (2.4.0)
     timecop (0.9.6)
     timeout (0.4.2)
     tinymce-rails (6.3.1)
@@ -553,7 +554,7 @@ DEPENDENCIES
   guard
   guard-livereload (~> 2.1)
   guard-rspec
-  haml (~> 5.0)
+  haml (~> 6.3)
   haml-rails
   honeybadger (~> 5.20)
   html2haml (~> 2.2)