diff --git a/profiles/package.mask b/profiles/package.mask
index 492aad3dd1ddc..bab9f5d23a4be 100644
--- a/profiles/package.mask
+++ b/profiles/package.mask
@@ -32,6 +32,12 @@
 
 #--- END OF EXAMPLES ---
 
+# Michał Górny <mgorny@gentoo.org> (2020-09-25)
+# PyPy3.7 alpha.  Known to break a few packages.  Masked until it
+# matures more.
+=dev-python/pypy3-7.3.2_p37*
+=dev-python/pypy3-exe-7.3.2_p37*
+
 # Michał Górny <mgorny@gentoo.org> (2020-09-25)
 # Effectively unmaintained.  Not ported to py3.7.  Multiple unresolved
 # build failures reported.  No reverse dependencies.