diff --git a/python-passlib.changes b/python-passlib.changes
index 3afd7e4..0b3316e 100644
--- a/python-passlib.changes
+++ b/python-passlib.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Sep 24 17:34:01 UTC 2020 - Hans-Peter Jansen <hpj@urpla.net>
+
+- Add optional dependencies: bcrypt, argon2_cffi, cryptography
+  and scrypt.
+
 -------------------------------------------------------------------
 Tue Jun  9 06:39:47 UTC 2020 - Marketa Calabkova <mcalabkova@suse.com>
 
diff --git a/python-passlib.spec b/python-passlib.spec
index fc0da53..f14c6f6 100644
--- a/python-passlib.spec
+++ b/python-passlib.spec
@@ -25,10 +25,18 @@ License:        BSD-3-Clause
 Group:          Development/Languages/Python
 URL:            https://bitbucket.org/ecollins/passlib
 Source:         https://files.pythonhosted.org/packages/source/p/passlib/passlib-%{version}.tar.gz
+BuildRequires:  %{python_module argon2_cffi}
+BuildRequires:  %{python_module bcrypt}
+BuildRequires:  %{python_module cryptography}
 BuildRequires:  %{python_module pytest}
+BuildRequires:  %{python_module scrypt}
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
+Recommends:     python-argon2_cffi
+Recommends:     python-bcrypt
+Recommends:     python-cryptography
+Recommends:     python-scrypt
 BuildArch:      noarch
 %python_subpackages