diff --git a/Gemfile b/Gemfile
index 58e41a37..a7e026a6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -59,7 +59,7 @@ end
 
 group :development do
   gem 'web-console', '~> 3.3'
-  gem 'spring', '~> 2.1'
+  gem 'spring', '~> 4.1'
 end
 
 # Use ActiveModel has_secure_password
diff --git a/Gemfile.lock b/Gemfile.lock
index 90abe0fb..ad05f710 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -711,7 +711,7 @@ GEM
     sparql-client (3.2.1)
       net-http-persistent (~> 4.0, >= 4.0.1)
       rdf (~> 3.2, >= 3.2.6)
-    spring (2.1.1)
+    spring (4.1.1)
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -828,7 +828,7 @@ DEPENDENCIES
   sdoc (~> 2.6)
   sidekiq (~> 4.2)
   simplecov (~> 0.16)
-  spring (~> 2.1)
+  spring (~> 4.1)
   sqlite3 (~> 1.6)
   therubyracer (~> 0.12)
   thin (~> 1.8)