diff --git a/.version b/.version
index 0fa4ae48..0c89fc92 100644
--- a/.version
+++ b/.version
@@ -1 +1 @@
-3.3.0
\ No newline at end of file
+4.0.0
\ No newline at end of file
diff --git a/CHANGELOG.latest.md b/CHANGELOG.latest.md
index 9f88a283..bdbf1424 100644
--- a/CHANGELOG.latest.md
+++ b/CHANGELOG.latest.md
@@ -1 +1,7 @@
-- Update purchases-android to 5.3.0 (https://github.com/RevenueCat/purchases-android/releases/tag/5.3.0)
+- Fixed snake_case and camelCase serialization inconsistency in `StoreProduct` (https://github.com/RevenueCat/purchases-hybrid-common/pull/187):
+    - Renamed `price_string` to `priceString`
+    - Renamed `currency_code` to `currencyCode`
+    - Renamed `intro_price` to `introPrice`
+    - Renamed `product_category` to `productCategory`
+    - Renamed `product_type` to `productType`
+- Updated `purchases-ios` to [4.9.1](https://github.com/RevenueCat/purchases-ios/releases/tag/4.9.1)
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 23fc3940..4a1dd8e5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+## 4.0.0
+
+- Fixed snake_case and camelCase serialization inconsistency in `StoreProduct` (https://github.com/RevenueCat/purchases-hybrid-common/pull/187):
+    - Renamed `price_string` to `priceString`
+    - Renamed `currency_code` to `currencyCode`
+    - Renamed `intro_price` to `introPrice`
+    - Renamed `product_category` to `productCategory`
+    - Renamed `product_type` to `productType`
+- Updated `purchases-ios` to [4.9.1](https://github.com/RevenueCat/purchases-ios/releases/tag/4.9.1)
+
 ## 3.3.0
 
 - Update purchases-android to 5.3.0 (https://github.com/RevenueCat/purchases-android/releases/tag/5.3.0)
diff --git a/PurchasesHybridCommon.podspec b/PurchasesHybridCommon.podspec
index d4cbb981..970253b6 100644
--- a/PurchasesHybridCommon.podspec
+++ b/PurchasesHybridCommon.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = "PurchasesHybridCommon"
-  s.version          = "3.3.0"
+  s.version          = "4.0.0"
   s.summary          = "Common files for hybrid SDKs for RevenueCat's Subscription and in-app-purchase backend service."
 
   s.description      = <<-DESC
@@ -15,7 +15,7 @@ Pod::Spec.new do |s|
 
   s.framework      = 'StoreKit'
 
-  s.dependency 'RevenueCat', '4.9.0'
+  s.dependency 'RevenueCat', '4.9.1'
   s.swift_version = '5.0'
 
   s.ios.deployment_target = '11.0'
diff --git a/android/build.gradle b/android/build.gradle
index bf01d3e5..8ac3d489 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -47,7 +47,7 @@ android {
         minSdkVersion 14
         targetSdkVersion 32
         versionCode 1
-        versionName "3.3.0"
+        versionName "4.0.0"
 
         consumerProguardFiles 'consumer-rules.pro'
     }
diff --git a/android/gradle.properties b/android/gradle.properties
index 1c19618f..a50317d0 100644
--- a/android/gradle.properties
+++ b/android/gradle.properties
@@ -22,7 +22,7 @@ kotlin.code.style=official
 
 # Maven
 GROUP=com.revenuecat.purchases
-VERSION_NAME=3.3.0
+VERSION_NAME=4.0.0
 POM_NAME=purchases-hybrid-common
 POM_PACKAGING=aar
 POM_ARTIFACT_ID=purchases-hybrid-common
diff --git a/ios/PurchasesHybridCommon/Info.plist b/ios/PurchasesHybridCommon/Info.plist
index 3a569945..0d9df918 100644
--- a/ios/PurchasesHybridCommon/Info.plist
+++ b/ios/PurchasesHybridCommon/Info.plist
@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
 	<key>CFBundleShortVersionString</key>
-	<string>3.3.0</string>
+	<string>4.0.0</string>
 	<key>CFBundleVersion</key>
 	<string>$(CURRENT_PROJECT_VERSION)</string>
 </dict>
diff --git a/ios/PurchasesHybridCommon/Podfile b/ios/PurchasesHybridCommon/Podfile
index a731e21d..91ae3eff 100644
--- a/ios/PurchasesHybridCommon/Podfile
+++ b/ios/PurchasesHybridCommon/Podfile
@@ -5,7 +5,7 @@ target 'PurchasesHybridCommon' do
   use_frameworks!
 
   # Pods for PurchasesHybridCommon
-  pod 'RevenueCat', '4.9.0'
+  pod 'RevenueCat', '4.9.1'
   
   target 'PurchasesHybridCommonTests' do
     # Pods for testing
@@ -28,5 +28,5 @@ target 'ObjCAPITester' do
   platform :ios, '11.0'
   use_frameworks!
 
-  pod 'RevenueCat', '4.9.0'
+  pod 'RevenueCat', '4.9.1'
 end
\ No newline at end of file
diff --git a/ios/PurchasesHybridCommon/PurchasesHybridCommonTests/Info.plist b/ios/PurchasesHybridCommon/PurchasesHybridCommonTests/Info.plist
index b01f035a..1bb9194f 100644
--- a/ios/PurchasesHybridCommon/PurchasesHybridCommonTests/Info.plist
+++ b/ios/PurchasesHybridCommon/PurchasesHybridCommonTests/Info.plist
@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
 	<key>CFBundleShortVersionString</key>
-	<string>3.3.0</string>
+	<string>4.0.0</string>
 	<key>CFBundleVersion</key>
 	<string>1</string>
 </dict>