diff -Nru libcloud-2.3.0/debian/changelog libcloud-2.3.0/debian/changelog
--- libcloud-2.3.0/debian/changelog	2018-08-27 14:48:35.000000000 +0000
+++ libcloud-2.3.0/debian/changelog	2018-08-29 13:10:47.000000000 +0000
@@ -1,3 +1,10 @@
+libcloud (2.3.0-1ubuntu2) cosmic; urgency=medium
+
+  * d/p/convert-object-size.patch: Convert object_size to string before
+    adding it to a header.
+
+ -- Andreas Hasenack <andreas@canonical.com>  Wed, 29 Aug 2018 10:10:47 -0300
+
 libcloud (2.3.0-1ubuntu1) cosmic; urgency=medium
 
   * Address some python 3.7 issues (LP: #1788931):
diff -Nru libcloud-2.3.0/debian/patches/convert-object-size.patch libcloud-2.3.0/debian/patches/convert-object-size.patch
--- libcloud-2.3.0/debian/patches/convert-object-size.patch	1970-01-01 00:00:00.000000000 +0000
+++ libcloud-2.3.0/debian/patches/convert-object-size.patch	2018-08-29 13:10:47.000000000 +0000
@@ -0,0 +1,29 @@
+Description: Convert object_size to string before adding it to a header.
+ Since python-requests 2.11
+ (see https://github.com/requests/requests/issues/3477), integer values
+ in headers are no longer automatically converted to strings, so we need
+ to do it ourselves.
+ .
+ This is the same change that was done a couple of lines above for the
+ Content-Length header in commit 28a559042.
+ .
+ Signed-off-by: Quentin Pradet <quentinp@apache.org>
+Author: Andreas Hasenack <andreas@canonical.com>
+Bug: https://github.com/apache/libcloud/pull/1237
+Applied-Upstream: https://github.com/apache/libcloud/commit/e77580d8e0bfacf95e68210448186af4b9109025
+Last-Update: 2018-08-29
+---
+ libcloud/storage/drivers/azure_blobs.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/libcloud/storage/drivers/azure_blobs.py
++++ b/libcloud/storage/drivers/azure_blobs.py
+@@ -865,7 +865,7 @@
+ 
+         if blob_type == 'PageBlob':
+             headers['Content-Length'] = str('0')
+-            headers['x-ms-blob-content-length'] = object_size
++            headers['x-ms-blob-content-length'] = str(object_size)
+ 
+         return headers
+ 
diff -Nru libcloud-2.3.0/debian/patches/series libcloud-2.3.0/debian/patches/series
--- libcloud-2.3.0/debian/patches/series	2018-08-27 14:48:35.000000000 +0000
+++ libcloud-2.3.0/debian/patches/series	2018-08-29 13:10:47.000000000 +0000
@@ -1,2 +1,3 @@
 remove-async-due-py37.patch
 handle-http_proxy-in-tests.patch
+convert-object-size.patch