diff --git a/setup.py b/setup.py
index 8cc051f..8ead251 100644
--- a/setup.py
+++ b/setup.py
@@ -26,7 +26,7 @@ setup(name="magic-wormhole",
           ]
       },
       install_requires=[
-          "spake2==0.7", "pynacl",
+          "spake2==0.8", "pynacl",
           "six",
           "attrs >= 16.3.0", # 16.3.0 adds __attrs_post_init__
           "twisted[tls] >= 17.5.0", # 17.5.0 adds failAfterFailures=