diff --git a/ChangeLog.md b/ChangeLog.md
index e6be01f..6fbdd8b 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,6 @@
+2020.08 - version 1.5.1
+* Lower case query parameter names.
+
 2020.01 - version 1.5.0
 
 * Added support to include deleted in blob list.
diff --git a/composer.json b/composer.json
index 5d9be17..9a26c78 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "microsoft/azure-storage-blob",
-    "version": "1.5.0",
+    "version": "1.5.1",
     "description": "This project provides a set of PHP client libraries that make it easy to access Microsoft Azure Storage Blob APIs.",
     "keywords": [ "php", "azure", "storage", "sdk", "blob" ],
     "license": "MIT",
@@ -12,7 +12,7 @@
     ],
     "require": {
         "php": ">=5.6.0",
-        "microsoft/azure-storage-common": "~1.4"
+        "microsoft/azure-storage-common": "~1.5"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Blob/BlobRestProxy.php b/src/Blob/BlobRestProxy.php
index e386874..d2d3cc3 100644
--- a/src/Blob/BlobRestProxy.php
+++ b/src/Blob/BlobRestProxy.php
@@ -864,17 +864,17 @@ public function listContainersAsync(
         );
         $this->addOptionalQueryParam(
             $queryParams,
-            Resources::QP_PREFIX,
+            Resources::QP_PREFIX_LOWERCASE,
             $options->getPrefix()
         );
         $this->addOptionalQueryParam(
             $queryParams,
-            Resources::QP_MARKER,
+            Resources::QP_MARKER_LOWERCASE,
             $options->getNextMarker()
         );
         $this->addOptionalQueryParam(
             $queryParams,
-            Resources::QP_MAX_RESULTS,
+            Resources::QP_MAX_RESULTS_LOWERCASE,
             $options->getMaxResults()
         );
         $isInclude = $options->getIncludeMetadata();
@@ -1522,12 +1522,12 @@ public function listBlobsAsync(
         );
         $this->addOptionalQueryParam(
             $queryParams,
-            Resources::QP_PREFIX,
+            Resources::QP_PREFIX_LOWERCASE,
             str_replace('\\', '/', $options->getPrefix())
         );
         $this->addOptionalQueryParam(
             $queryParams,
-            Resources::QP_MARKER,
+            Resources::QP_MARKER_LOWERCASE,
             $options->getNextMarker()
         );
         $this->addOptionalQueryParam(
@@ -1537,7 +1537,7 @@ public function listBlobsAsync(
         );
         $this->addOptionalQueryParam(
             $queryParams,
-            Resources::QP_MAX_RESULTS,
+            Resources::QP_MAX_RESULTS_LOWERCASE,
             $options->getMaxResults()
         );
 
diff --git a/src/Blob/Internal/BlobResources.php b/src/Blob/Internal/BlobResources.php
index c7f3041..ec736e4 100644
--- a/src/Blob/Internal/BlobResources.php
+++ b/src/Blob/Internal/BlobResources.php
@@ -41,7 +41,7 @@ class BlobResources extends Resources
 {
     // @codingStandardsIgnoreStart
 
-    const BLOB_SDK_VERSION = '1.5.0';
+    const BLOB_SDK_VERSION = '1.5.1';
     const STORAGE_API_LATEST_VERSION = '2017-11-09';
 
     // Error messages