diff --git a/setup.py b/setup.py
index ded094a..d023dbf 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
     license='MIT',
     packages=['libexif'],
     package_data={'libexif': ['libexif.cdef']},
-    setup_requires=['cffi >= 1.0'],
-    install_requires=['cffi >= 1.0'],
+    setup_requires=['cffi >= 1.0,<1.6'],
+    install_requires=['cffi >= 1.0,<1.6'],
     cffi_modules=["libexif/libexif_build.py:ffi"]
-)
\ No newline at end of file
+)