diff --git a/Gemfile b/Gemfile
index 1def3d9c..cce7377e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -45,7 +45,8 @@ gem 'actionview-encoded_mail_to'
 gem 'differ'
 
 # A generic library to administrate the tool
-gem 'activeadmin'
+# Needs ruby 2.4 for version after 2.1
+gem 'activeadmin', '< 2.1'
 gem 'has_scope'
 gem 'preserve'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 979c2cce..6dcb9400 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -33,7 +33,7 @@ GEM
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
     actionview-encoded_mail_to (1.0.9)
       rails
-    activeadmin (2.1.0)
+    activeadmin (2.0.0)
       arbre (~> 1.2, >= 1.2.1)
       formtastic (~> 3.1)
       formtastic_i18n (~> 0.4)
@@ -42,7 +42,7 @@ GEM
       kaminari (~> 1.0, >= 1.0.1)
       railties (>= 5.0, < 6.0)
       ransack (~> 2.1, >= 2.1.1)
-      sassc-rails (~> 2.1)
+      sass (~> 3.4)
       sprockets (>= 3.0, < 4.1)
       sprockets-es6 (~> 0.9, >= 0.9.2)
     activejob (5.2.3)
@@ -463,7 +463,7 @@ PLATFORMS
 
 DEPENDENCIES
   actionview-encoded_mail_to
-  activeadmin
+  activeadmin (< 2.1)
   acts-as-taggable-on
   brakeman
   bundler-audit