diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3025b8c..630e5d1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Version 5.2.2
+
+1. Updated TypeScript types to allow string values for the `dpr` parameter in transformations, enabling support for arithmetic expressions and dynamic DPR values.
+
 ## Version 5.2.1
 
 1. **Bug fix:**
diff --git a/package-lock.json b/package-lock.json
index 29c2372..ed01b20 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "@imagekit/javascript",
-    "version": "5.2.1",
+    "version": "5.2.2",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "@imagekit/javascript",
-            "version": "5.2.1",
+            "version": "5.2.2",
             "license": "MIT",
             "devDependencies": {
                 "@babel/cli": "^7.10.5",
diff --git a/package.json b/package.json
index 910b0f9..56cd67e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@imagekit/javascript",
-    "version": "5.2.1",
+    "version": "5.2.2",
     "description": "ImageKit Javascript SDK",
     "main": "dist/imagekit.cjs.js",
     "module": "dist/imagekit.esm.js",
diff --git a/src/interfaces/shared.ts b/src/interfaces/shared.ts
index ad8245e..1db4d55 100644
--- a/src/interfaces/shared.ts
+++ b/src/interfaces/shared.ts
@@ -1431,7 +1431,7 @@ export interface Transformation {
    *   [Arithmetic expressions](https://imagekit.io/docs/arithmetic-expressions-in-transformations).
    * - See [DPR](https://imagekit.io/docs/image-resize-and-crop#dpr---dpr).
    */
-  dpr?: number;
+  dpr?: number | string;
 
   /**
    * Specifies the duration (in seconds) for trimming videos, e.g., `5` or `10.5`.