diff --git a/libraries/cffi/README b/libraries/cffi/README
index aefa318cac..95a3dd927b 100644
--- a/libraries/cffi/README
+++ b/libraries/cffi/README
@@ -1,2 +1,4 @@
 Foreign Function Interface for Python calling C code. The aim of this project
 is to provide a convenient and reliable way of calling C code from Python.
+
+Optional dependency: python3
diff --git a/libraries/cffi/cffi.SlackBuild b/libraries/cffi/cffi.SlackBuild
index 725df9c939..0b35ccaa25 100644
--- a/libraries/cffi/cffi.SlackBuild
+++ b/libraries/cffi/cffi.SlackBuild
@@ -71,6 +71,11 @@ find -L . \
 
 python setup.py install --root=$PKG
 
+# Python 3 support.
+if $(python3 -c 'import sys' 2>/dev/null); then
+  python3 setup.py install --root=$PKG
+fi
+
 find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
   | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true