diff --git a/python-cryptography.spec b/python-cryptography.spec
index 6e0dd67..77b4edf 100644
--- a/python-cryptography.spec
+++ b/python-cryptography.spec
@@ -1,6 +1,6 @@
 Name:          python-cryptography
 Version:       1.8.1
-Release:       1mamba
+Release:       3mamba
 Summary:       Cryptographic recipes and primitives to Python developers
 Group:         System/Libraries
 Vendor:        openmamba
@@ -21,6 +21,8 @@ Requires:      python-pyasn1
 Requires:      python-idna
 Requires:      python-cffi
 Requires:      python-ipaddress
+Requires:      python-packaging
+Requires:      python-asn1crypto
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
@@ -49,6 +51,12 @@ CFLAGS="%{optflags}" %{__python} setup.py build
 %doc LICENSE
 
 %changelog
+* Fri Apr 14 2017 Silvan Calarco <silvan.calarco@mambasoft.it> 1.8.1-3mamba
+- fix typo in requirement
+
+* Thu Apr 13 2017 Silvan Calarco <silvan.calarco@mambasoft.it> 1.8.1-2mamba
+- require python-packaging and python-asn1crypto
+
 * Fri Mar 17 2017 Automatic Build System <autodist@mambasoft.it> 1.8.1-1mamba
 - automatic version update by autodist