diff --git a/pgpverify b/pgpverify
index a9e3eb1..464ee64 100755
--- a/pgpverify
+++ b/pgpverify
@@ -18,8 +18,12 @@
 #
 # Changes from 1.29 -> 1.30
 # -- Support for GnuPG's gpg binary (in addition to gpgv).  gpg (from
-#    GnuPG 1.x) still validates signatures made with weak digest
-#    algorithms like MD5 whereas current versions of gpgv no longer do.
+#    GnuPG 1.x before 1.4.20, and GnuPG 2.0.x) still validates signatures
+#    made with weak digest algorithms like MD5 whereas current versions
+#    of gpgv no longer do.
+# -- This new release of pgpverify requires at least GnuPG 1.4.20 or 2.1.0.
+#    If you're using an older version of GnuPG, you have to keep using
+#    pgpverify 1.29.
 #
 # Changes from 1.28 -> 1.29
 # -- Disambiguate numbered lists from description lists in POD to silent