diff --git a/.rubocop.yml b/.rubocop.yml
index 2ced30d..f21b1b1 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -49,8 +49,3 @@ Style/HashSyntax:
 
 Style/RedundantFreeze:
   Enabled: true
-
-# TODO
-# Remove cop disabling and fix offenses
-Lint/HandleExceptions:
-  Enabled: false
diff --git a/lib/rack/attack/store_proxy/dalli_proxy.rb b/lib/rack/attack/store_proxy/dalli_proxy.rb
index f3fbc6c..0b6cfb0 100644
--- a/lib/rack/attack/store_proxy/dalli_proxy.rb
+++ b/lib/rack/attack/store_proxy/dalli_proxy.rb
@@ -28,6 +28,7 @@ module Rack
             client.get(key)
           end
         rescue Dalli::DalliError
+          nil
         end
 
         def write(key, value, options = {})
@@ -35,6 +36,7 @@ module Rack
             client.set(key, value, options.fetch(:expires_in, 0), raw: true)
           end
         rescue Dalli::DalliError
+          nil
         end
 
         def increment(key, amount, options = {})
@@ -42,6 +44,7 @@ module Rack
             client.incr(key, amount, options.fetch(:expires_in, 0), amount)
           end
         rescue Dalli::DalliError
+          nil
         end
 
         def delete(key)
@@ -49,6 +52,7 @@ module Rack
             client.delete(key)
           end
         rescue Dalli::DalliError
+          nil
         end
 
         private
diff --git a/lib/rack/attack/store_proxy/redis_proxy.rb b/lib/rack/attack/store_proxy/redis_proxy.rb
index 69fa19d..5572d0c 100644
--- a/lib/rack/attack/store_proxy/redis_proxy.rb
+++ b/lib/rack/attack/store_proxy/redis_proxy.rb
@@ -21,6 +21,7 @@ module Rack
         def read(key)
           get(key)
         rescue Redis::BaseError
+          nil
         end
 
         def write(key, value, options = {})
@@ -30,6 +31,7 @@ module Rack
             set(key, value)
           end
         rescue Redis::BaseError
+          nil
         end
 
         def increment(key, amount, options = {})
@@ -42,11 +44,13 @@ module Rack
 
           count.value if count
         rescue Redis::BaseError
+          nil
         end
 
         def delete(key, _options = {})
           del(key)
         rescue Redis::BaseError
+          nil
         end
       end
     end
diff --git a/lib/rack/attack/store_proxy/redis_store_proxy.rb b/lib/rack/attack/store_proxy/redis_store_proxy.rb
index 359b542..d7b753c 100644
--- a/lib/rack/attack/store_proxy/redis_store_proxy.rb
+++ b/lib/rack/attack/store_proxy/redis_store_proxy.rb
@@ -13,6 +13,7 @@ module Rack
         def read(key)
           get(key, raw: true)
         rescue Redis::BaseError
+          nil
         end
 
         def write(key, value, options = {})
@@ -22,6 +23,7 @@ module Rack
             set(key, value, raw: true)
           end
         rescue Redis::BaseError
+          nil
         end
       end
     end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index b46161e..ad377bf 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -18,6 +18,7 @@ def safe_require(name)
   begin
     require name
   rescue LoadError
+    nil
   end
 end