diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7e4038..8bac854 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 * Fixed binary file downloads.
 * Fixed credentials cache handling.
+* Added missing `env` init parameter to the `Upload` SDK class.
 
 ## 3.3.0 - 2025-06-20
 
diff --git a/okdata/sdk/data/upload.py b/okdata/sdk/data/upload.py
index 4fac03d..08ad35a 100644
--- a/okdata/sdk/data/upload.py
+++ b/okdata/sdk/data/upload.py
@@ -4,47 +4,43 @@
 from okdata.sdk import SDK
 from okdata.sdk.exceptions import ApiAuthenticateError
 
-
 log = logging.getLogger()
 
 
 class Upload(SDK):
-    def __init__(self, config=None, auth=None):
+    def __init__(self, config=None, auth=None, env=None):
         self.__name__ = "upload"
-        super().__init__(config, auth)
+        super().__init__(config, auth, env)
 
-    def upload(self, fileName, datasetid, versionid, editionid, retries=0):
+    def upload(self, filename, dataset_id, version, edition, retries=0):
         url = self.config.get("s3BucketUrl")
-        log.info(f"Uploading {fileName} to {datasetid} on: {url}")
+        log.info(f"Uploading {filename} to {dataset_id} on: {url}")
         if url is None:
-            raise KeyError("No s3 Bucket URL set")
+            raise KeyError("No S3 bucket URL set")
 
-        s3SignedData = self.create_s3_signed_data(
-            fileName, datasetid, versionid, editionid, retries=retries
+        s3_signed_data = self.create_s3_signed_data(
+            filename, dataset_id, version, edition, retries=retries
         )
-        s3Data = {}
-        if "message" in s3SignedData:
-            # TODO: very specific error raised by the Lambda function, remove later
-            raise ApiAuthenticateError(s3SignedData["message"])
+        s3_data = {}
+        if "message" in s3_signed_data:
+            # TODO: Very specific error raised by the Lambda function, remove later
+            raise ApiAuthenticateError(s3_signed_data["message"])
 
-        for var in s3SignedData["fields"]:
-            s3Data[var] = s3SignedData["fields"][var]
+        for var in s3_signed_data["fields"]:
+            s3_data[var] = s3_signed_data["fields"][var]
 
-        with open(fileName, "rb") as file:
+        with open(filename, "rb") as file:
             files = {"file": file}
             upload_session = self.prepared_request_with_retries(retries=retries)
-            result = upload_session.post(url, data=s3Data, files=files)
-            trace_id = s3SignedData.get("trace_id")
-            data = {"result": result.status_code == 204, "trace_id": trace_id}
-            return data
-
-    def create_s3_signed_data(
-        self, fileName, datasetid, versionid, editionid, retries=0
-    ):
-        edition = f"{datasetid}/{versionid}/{editionid}"
-        data = {"filename": os.path.basename(fileName), "editionId": edition}
+            result = upload_session.post(url, data=s3_data, files=files)
+            trace_id = s3_signed_data.get("trace_id")
+            return {"result": result.status_code == 204, "trace_id": trace_id}
+
+    def create_s3_signed_data(self, filename, dataset_id, version, edition, retries=0):
+        edition_id = f"{dataset_id}/{version}/{edition}"
+        data = {"filename": os.path.basename(filename), "editionId": edition_id}
         url = self.config.get("uploadUrl")
-        log.info(f"Creating s3 signed data with payload: {data} on: {url}")
+        log.info(f"Creating S3 signed data with payload: {data} on: {url}")
         if url is None:
-            raise KeyError("No Signed S3 URL set")
+            raise KeyError("No signed S3 URL set")
         return self.post(url, data, retries=retries).json()