diff --git a/contrib/ruby_event_store-outbox/Gemfile b/contrib/ruby_event_store-outbox/Gemfile
index f62999ba59..39acc74f7b 100644
--- a/contrib/ruby_event_store-outbox/Gemfile
+++ b/contrib/ruby_event_store-outbox/Gemfile
@@ -12,3 +12,4 @@ gem "sidekiq", "~> 7.2"
 gem "influxdb", "~> 0.8.1", require: false
 gem "childprocess"
 gem "rails", "~> 7.2.2.1"
+gem "zeitwerk", "~> 2.6.0"
diff --git a/contrib/ruby_event_store-outbox/Gemfile.lock b/contrib/ruby_event_store-outbox/Gemfile.lock
index 533e61664d..a79b7d8376 100644
--- a/contrib/ruby_event_store-outbox/Gemfile.lock
+++ b/contrib/ruby_event_store-outbox/Gemfile.lock
@@ -235,7 +235,7 @@ GEM
     websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
-    zeitwerk (2.7.1)
+    zeitwerk (2.6.18)
 
 PLATFORMS
   arm64-darwin
@@ -257,6 +257,7 @@ DEPENDENCIES
   ruby_event_store-outbox!
   sidekiq (~> 7.2)
   sqlite3 (~> 1.7)
+  zeitwerk (~> 2.6.0)
 
 BUNDLED WITH
    2.5.15
diff --git a/contrib/ruby_event_store-protobuf/Gemfile b/contrib/ruby_event_store-protobuf/Gemfile
index cc80bd54d2..1aa51aae4a 100644
--- a/contrib/ruby_event_store-protobuf/Gemfile
+++ b/contrib/ruby_event_store-protobuf/Gemfile
@@ -15,3 +15,4 @@ gem "ruby_event_store-browser", path: "../.."
 gem "protobuf_nested_struct"
 gem "google-protobuf", "~> 3.24"
 gem "rails", "~> 7.2.2.1"
+gem "zeitwerk", "~> 2.6.0"
diff --git a/contrib/ruby_event_store-protobuf/Gemfile.lock b/contrib/ruby_event_store-protobuf/Gemfile.lock
index 7148620df7..0d3428cc1f 100644
--- a/contrib/ruby_event_store-protobuf/Gemfile.lock
+++ b/contrib/ruby_event_store-protobuf/Gemfile.lock
@@ -246,7 +246,7 @@ GEM
     websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
-    zeitwerk (2.7.1)
+    zeitwerk (2.6.18)
 
 PLATFORMS
   arm64-darwin
@@ -269,6 +269,7 @@ DEPENDENCIES
   ruby_event_store-active_record!
   ruby_event_store-browser!
   ruby_event_store-protobuf!
+  zeitwerk (~> 2.6.0)
 
 BUNDLED WITH
    2.5.15
diff --git a/contrib/ruby_event_store-sidekiq_scheduler/Gemfile b/contrib/ruby_event_store-sidekiq_scheduler/Gemfile
index e3b2af34a2..fd2b7300f4 100644
--- a/contrib/ruby_event_store-sidekiq_scheduler/Gemfile
+++ b/contrib/ruby_event_store-sidekiq_scheduler/Gemfile
@@ -9,3 +9,4 @@ gem "sidekiq", "~> 7.2"
 gem "ruby_event_store", path: "../.."
 gem "rails_event_store", path: "../.."
 gem "rails", "~> 7.2.2.1"
+gem "zeitwerk", "~> 2.6.0"
diff --git a/contrib/ruby_event_store-sidekiq_scheduler/Gemfile.lock b/contrib/ruby_event_store-sidekiq_scheduler/Gemfile.lock
index 9487aabe9e..6360370fe9 100644
--- a/contrib/ruby_event_store-sidekiq_scheduler/Gemfile.lock
+++ b/contrib/ruby_event_store-sidekiq_scheduler/Gemfile.lock
@@ -250,7 +250,7 @@ GEM
     websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
-    zeitwerk (2.7.1)
+    zeitwerk (2.6.18)
 
 PLATFORMS
   arm64-darwin
@@ -268,6 +268,7 @@ DEPENDENCIES
   ruby_event_store!
   ruby_event_store-sidekiq_scheduler!
   sidekiq (~> 7.2)
+  zeitwerk (~> 2.6.0)
 
 BUNDLED WITH
    2.5.15
diff --git a/rails_event_store/Gemfile b/rails_event_store/Gemfile
index f49d16446f..12584e4de9 100644
--- a/rails_event_store/Gemfile
+++ b/rails_event_store/Gemfile
@@ -15,3 +15,4 @@ gem "sidekiq"
 gem "rack-test"
 gem "rails", "~> 7.2.2.1"
 gem "sqlite3", "~> 1.7"
+gem "zeitwerk", "~> 2.6.0"
diff --git a/rails_event_store/Gemfile.lock b/rails_event_store/Gemfile.lock
index 5b651488bb..b9d9e11647 100644
--- a/rails_event_store/Gemfile.lock
+++ b/rails_event_store/Gemfile.lock
@@ -249,7 +249,7 @@ GEM
     websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
-    zeitwerk (2.7.1)
+    zeitwerk (2.6.18)
 
 PLATFORMS
   arm64-darwin
@@ -272,6 +272,7 @@ DEPENDENCIES
   ruby_event_store-browser!
   sidekiq
   sqlite3 (~> 1.7)
+  zeitwerk (~> 2.6.0)
 
 BUNDLED WITH
    2.5.15