diff --git a/docs/build/doctrees/environment.pickle b/docs/build/doctrees/environment.pickle
index 92b98f6..cedb736 100644
Binary files a/docs/build/doctrees/environment.pickle and b/docs/build/doctrees/environment.pickle differ
diff --git a/docs/source/index.rst b/docs/source/index.rst
index 8ac9e21..7dd0afd 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -44,7 +44,7 @@ Usage example::
     import pybtc
     a = pybtc.Address()
     print(a.address)
-    print(a.private_key.wif())
+    print(a.private_key.wif)