diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 396d9f0..3d5f4e3 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "4.4.1"
+  ".": "4.5.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 63354d3..47cf1d3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## 4.5.0 (2026-04-28)
+
+Full Changelog: [v4.4.1...v4.5.0](https://github.com/imagekit-developer/imagekit-ruby/compare/v4.4.1...v4.5.0)
+
+### Features
+
+* support setting headers via env ([cd32783](https://github.com/imagekit-developer/imagekit-ruby/commit/cd32783efe49d795b8a5de49eb44039cda375d2e))
+
+
+### Chores
+
+* **internal:** codegen related update ([7e0543d](https://github.com/imagekit-developer/imagekit-ruby/commit/7e0543d8714ff251de1a32f471dc7bd8bfa17dab))
+
 ## 4.4.1 (2026-04-24)
 
 Full Changelog: [v4.4.0...v4.4.1](https://github.com/imagekit-developer/imagekit-ruby/compare/v4.4.0...v4.4.1)
diff --git a/Gemfile.lock b/Gemfile.lock
index d8e6b57..088e705 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GIT
 PATH
   remote: .
   specs:
-    imagekitio (4.4.1)
+    imagekitio (4.5.0)
       cgi
       connection_pool
       standardwebhooks
@@ -144,7 +144,7 @@ GEM
       rexml (>= 3.2.6)
       sorbet-static-and-runtime (>= 0.5.10187)
       thor (>= 0.19.2)
-    standardwebhooks (1.0.1)
+    standardwebhooks (1.1.0)
     steep (1.10.0)
       activesupport (>= 5.1)
       concurrent-ruby (>= 1.1.10)
diff --git a/README.md b/README.md
index 8c8e0ba..7a03c78 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ To use this gem, install via Bundler by adding the following to your application
 <!-- x-release-please-start-version -->
 
 ```ruby
-gem "imagekitio", "~> 4.4.1"
+gem "imagekitio", "~> 4.5.0"
 ```
 
 <!-- x-release-please-end -->
diff --git a/lib/imagekitio/client.rb b/lib/imagekitio/client.rb
index dc6d989..b4bfd22 100644
--- a/lib/imagekitio/client.rb
+++ b/lib/imagekitio/client.rb
@@ -120,6 +120,19 @@ def initialize(
         raise ArgumentError.new("private_key is required, and can be set via environ: \"IMAGEKIT_PRIVATE_KEY\"")
       end
 
+      headers = {}
+      custom_headers_env = ENV["IMAGE_KIT_CUSTOM_HEADERS"]
+      unless custom_headers_env.nil?
+        parsed = {}
+        custom_headers_env.split("\n").each do |line|
+          colon = line.index(":")
+          unless colon.nil?
+            parsed[line[0...colon].strip] = line[(colon + 1)..].strip
+          end
+        end
+        headers = parsed.merge(headers)
+      end
+
       @private_key = private_key.to_s
       @password = password.to_s
       @webhook_secret = webhook_secret&.to_s
@@ -129,7 +142,8 @@ def initialize(
         timeout: timeout,
         max_retries: max_retries,
         initial_retry_delay: initial_retry_delay,
-        max_retry_delay: max_retry_delay
+        max_retry_delay: max_retry_delay,
+        headers: headers
       )
 
       @custom_metadata_fields = Imagekitio::Resources::CustomMetadataFields.new(client: self)
diff --git a/lib/imagekitio/version.rb b/lib/imagekitio/version.rb
index 4f6f300..fd555c9 100644
--- a/lib/imagekitio/version.rb
+++ b/lib/imagekitio/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Imagekitio
-  VERSION = "4.4.1"
+  VERSION = "4.5.0"
 end