diff --git a/Gemfile b/Gemfile
index 245e8bf658a..de2df269d40 100644
--- a/Gemfile
+++ b/Gemfile
@@ -82,7 +82,7 @@ end
 group :cable do
   gem "puma", require: false
 
-  gem "redis", ">= 4.0.1", require: false
+  gem "redis", ">= 4.0.1", "< 5", require: false
 
   gem "redis-namespace"
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 4a040abaa26..ed76c3dad2b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -596,7 +596,7 @@ DEPENDENCIES
   rails!
   rake (>= 11.1)
   redcarpet (~> 3.2.3)
-  redis (>= 4.0.1)
+  redis (>= 4.0.1, < 5)
   redis-namespace
   resque
   resque-scheduler