diff --git a/pkgs/development/python-modules/azure-mgmt-mysqlflexibleservers/default.nix b/pkgs/development/python-modules/azure-mgmt-mysqlflexibleservers/default.nix
index f78db8a0d76a..b2524c5286b3 100644
--- a/pkgs/development/python-modules/azure-mgmt-mysqlflexibleservers/default.nix
+++ b/pkgs/development/python-modules/azure-mgmt-mysqlflexibleservers/default.nix
@@ -7,6 +7,7 @@
   azure-common,
   azure-mgmt-core,
   isodate,
+  msrest,
   typing-extensions,
 }:
 
@@ -30,6 +31,7 @@ buildPythonPackage rec {
     azure-common
     azure-mgmt-core
     isodate
+    msrest
     typing-extensions
   ];