diff --git a/nbdkit.spec b/nbdkit.spec
index edc9910..12beddc 100644
--- a/nbdkit.spec
+++ b/nbdkit.spec
@@ -44,7 +44,7 @@ ExclusiveArch:  x86_64
 %global source_directory 1.21-development
 
 Name:           nbdkit
-Version:        1.21.3
+Version:        1.21.4
 Release:        1%{?dist}
 Summary:        NBD server
 
@@ -981,6 +981,9 @@ make %{?_smp_mflags} check || {
 
 
 %changelog
+* Tue May 19 2020 Richard W.M. Jones <rjones@redhat.com> - 1.21.4-1
+- New upstream development version 1.21.4.
+
 * Sun May 10 2020 Richard W.M. Jones <rjones@redhat.com> - 1.21.3-1
 - New upstream development version 1.21.3.
 
diff --git a/sources b/sources
index 106d148..8e5ec3f 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (nbdkit-1.21.3.tar.gz) = 5a73cc56cbbd3af9401c532dee2db24099aa63e5aaa0eb37753c4d8b94f88fd4cb1c597c84e737e13aa1533685911382cde0fdc122d1f29964f946906448cd67
-SHA512 (nbdkit-1.21.3.tar.gz.sig) = 16d197395608737302056ff6fa7bc1bfaa2f473862bf1f99f415838619073e481ebaeaf3fb777cdb8ea4bb8a489bc0ca1ab196ea65499c4ce2fe3ac95f11888f
+SHA512 (nbdkit-1.21.4.tar.gz) = fd0865b33975df3d3851b9da3ac78d098e4491fc679f4a4c5c82c4952a6e3b7d581a10a81f5bf2d523c9c2663688385ebdf1eb533ca5e05b2f25674ac28987ff
+SHA512 (nbdkit-1.21.4.tar.gz.sig) = 166b0f842a548c1a22eff2f3f0c03c456114e2eba44e5c5be2fa2e12546fc19d2716fa05c8e78f57ccee7711ef6ea29ed7854f55566f459537d0f44203293473