diff --git a/Gemfile b/Gemfile
index ee0ad0c55..95bd394bd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -81,21 +81,17 @@ gem "rails", "~> 6.1.4" # Ruby on Rails
 gem "ransack", "~> 2.5" # Searching and sorting
 gem "recaptcha", "~> 5.8", require: "recaptcha/rails" # Helpers for the reCAPTCHA API
 gem "redcarpet", "~> 3.5" # A fast, safe and extensible Markdown to (X)HTML parser
+
 gem "redis", "~> 4.5.1" # Redis ruby client
+gem "redis-actionpack", "5.2.0" # Redis session store for ActionPack. Used for storing the Rails session in Redis.
 gem "rpush", "~> 6.0" # Push Notification library for Rails
 gem "rpush-redis", "~> 1.1" # Redis module capability for rpush library
-gem "rss", "~> 0.2.9" # Ruby's standard library for RSS
-
-# NOTE: [@rhymes, @citizen428]: sign in doesn't work with redis-rack 2.1.0+ or with redis-actionpack 5.2.0+
-# We need to investigate why exactly, in the meantime we are hardcoding these two dependencies
-# to keep them at the latest working version
-gem "redis-actionpack", "5.1.0" # Redis session store for ActionPack. Used for storing the Rails session in Redis.
-gem "redis-rack", "2.0.6" # Redis Store for Rack applications
 
 gem "request_store", "~> 1.5" # RequestStore gives you per-request global storage
 gem "reverse_markdown", "~> 2.1" # Map simple html back into markdown
 gem "rolify", "~> 6.0" # Very simple Roles library
 gem "rouge", "~> 3.27" # A pure-ruby code highlighter
+gem "rss", "~> 0.2.9" # Ruby's standard library for RSS
 gem "rubyzip", "~> 2.3" # Rubyzip is a ruby library for reading and writing zip files
 gem "s3_direct_upload", "~> 0.1" # Direct Upload to Amazon S3
 gem "sidekiq", "~> 6.3.1" # Sidekiq is used to process background jobs with the help of Redis
diff --git a/Gemfile.lock b/Gemfile.lock
index a1a0480a6..2855a7f6c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -627,12 +627,12 @@ GEM
       json
     redcarpet (3.5.1)
     redis (4.5.1)
-    redis-actionpack (5.1.0)
-      actionpack (>= 4.0, < 7)
-      redis-rack (>= 1, < 3)
+    redis-actionpack (5.2.0)
+      actionpack (>= 5, < 7)
+      redis-rack (>= 2.1.0, < 3)
       redis-store (>= 1.1.0, < 2)
-    redis-rack (2.0.6)
-      rack (>= 1.5, < 3)
+    redis-rack (2.1.3)
+      rack (>= 2.0.8, < 3)
       redis-store (>= 1.2, < 2)
     redis-store (1.9.0)
       redis (>= 4, < 5)
@@ -998,8 +998,7 @@ DEPENDENCIES
   recaptcha (~> 5.8)
   redcarpet (~> 3.5)
   redis (~> 4.5.1)
-  redis-actionpack (= 5.1.0)
-  redis-rack (= 2.0.6)
+  redis-actionpack (= 5.2.0)
   request_store (~> 1.5)
   reverse_markdown (~> 2.1)
   rolify (~> 6.0)
diff --git a/config/initializers/session_store.rb b/config/initializers/session_store.rb
index 886935e71..cbc0722f8 100644
--- a/config/initializers/session_store.rb
+++ b/config/initializers/session_store.rb
@@ -17,7 +17,6 @@ Rails.application.config.session_store :redis_store,
                                        domain: domain,
                                        servers: servers,
                                        expire_after: expires_after,
-                                       signed: true,
                                        secure: ApplicationConfig["FORCE_SSL_IN_RAILS"] == "true",
                                        same_site: :lax,
                                        httponly: true
diff --git a/vendor/cache/redis-actionpack-5.1.0.gem b/vendor/cache/redis-actionpack-5.1.0.gem
deleted file mode 100644
index ad92523b5..000000000
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diff --git a/vendor/cache/redis-actionpack-5.2.0.gem b/vendor/cache/redis-actionpack-5.2.0.gem
new file mode 100644
index 000000000..ae04f89ac
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diff --git a/vendor/cache/redis-rack-2.0.6.gem b/vendor/cache/redis-rack-2.0.6.gem
deleted file mode 100644
index f5e4c5c6c..000000000
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diff --git a/vendor/cache/redis-rack-2.1.3.gem b/vendor/cache/redis-rack-2.1.3.gem
new file mode 100644
index 000000000..d56ef0f3c
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