diff --git a/osxphotos/_version.py b/osxphotos/_version.py
index 81855671..41ed2f13 100644
--- a/osxphotos/_version.py
+++ b/osxphotos/_version.py
@@ -1,3 +1,3 @@
 """ version info """
 
-__version__ = "0.21.5"
+__version__ = "0.21.6"
diff --git a/setup.py b/setup.py
index 8a6261c5..ec53f412 100755
--- a/setup.py
+++ b/setup.py
@@ -61,6 +61,6 @@ setup(
         "Programming Language :: Python :: 3.6",
         "Topic :: Software Development :: Libraries :: Python Modules",
     ],
-    install_requires=["pyobjc", "Click", "pyyaml"],
+    install_requires=["pyobjc>=6.0.1", "Click>=7", "PyYAML>=5.1.2"],
     entry_points={"console_scripts": ["osxphotos=osxphotos.__main__:cli"]},
 )