Index: passlib/hosts.py
--- passlib/hosts.py.orig
+++ passlib/hosts.py
@@ -33,14 +33,15 @@ linux_context = linux2_context = LazyCryptContext(
 # referencing source via -http://fxr.googlebit.com
 # freebsd 6,7,8 - des, md5, bcrypt, bsd_nthash
 # netbsd - des, ext, md5, bcrypt, sha1
-# openbsd - des, ext, md5, bcrypt
+# openbsd 5.9+ - bcrypt (no $2$; accepts $2a$, native $2b$)
+# older openbsd - des, ext, md5, bcrypt
 
 freebsd_context = LazyCryptContext(
     ["bcrypt", "md5_crypt", "bsd_nthash", "des_crypt", "unix_disabled"]
 )
 
 openbsd_context = LazyCryptContext(
-    ["bcrypt", "md5_crypt", "bsdi_crypt", "des_crypt", "unix_disabled"]
+    ["bcrypt", "unix_disabled"]
 )
 
 netbsd_context = LazyCryptContext(
