diff --git a/config/environments/development.rb b/config/environments/development.rb
index 42bbef4f7de..d1a1e61f20c 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -25,7 +25,7 @@
     config.action_controller.enable_fragment_cache_logging = true
 
     config.cache_store = :mem_cache_store,
-                         { compress: true, compression_min_size: 524_288 }
+                         { compress: true, compression_min_size: 524_288, serializer: :json }
     config.public_file_server.headers = {
       "Cache-Control" => "public, max-age=#{2.days.to_i}"
     }
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 8d5862924f6..f8d8fca2a79 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -119,7 +119,8 @@
     socket_failure_delay: 0.2,
     compress: true,
     compression_min_size: 524_288,
-    value_max_bytes: 2_097_152 # 2MB
+    value_max_bytes: 2_097_152, # 2MB
+    serializer: :json
   }
 
   config.middleware.use Gemcutter::Middleware::Redirector
diff --git a/config/environments/staging.rb b/config/environments/staging.rb
index f2a52cdfe87..6759c5733f2 100644
--- a/config/environments/staging.rb
+++ b/config/environments/staging.rb
@@ -103,7 +103,8 @@
     socket_failure_delay: 0.2,
     compress: true,
     compression_min_size: 524_288,
-    value_max_bytes: 2_097_152 # 2MB
+    value_max_bytes: 2_097_152, # 2MB
+    serializer: :json
   }
 
   config.middleware.use Gemcutter::Middleware::Redirector