diff --git a/nbdkit.spec b/nbdkit.spec
index 35e0627..00c9f9f 100644
--- a/nbdkit.spec
+++ b/nbdkit.spec
@@ -1,8 +1,14 @@
 %global _hardened_build 1
 
 %ifarch %{kernel_arches}
-# ... except that it doesn't work on s390, so:
-%ifnarch s390 s390x
+# riscv64 tests fail with
+# qemu-system-riscv64: invalid accelerator kvm
+# qemu-system-riscv64: falling back to tcg
+# qemu-system-riscv64: unable to find CPU model 'host'
+# This seems to require changes in libguestfs and/or qemu to support
+# -cpu max or -cpu virt.
+# s390x builders can't run libguestfs
+%ifnarch riscv64 s390 s390x
 %global have_libguestfs 1
 %endif
 %endif
@@ -44,7 +50,7 @@ ExclusiveArch:  x86_64
 %global source_directory 1.25-development
 
 Name:           nbdkit
-Version:        1.25.6
+Version:        1.25.7
 Release:        1%{?dist}
 Summary:        NBD server
 
@@ -1217,6 +1223,10 @@ export LIBGUESTFS_TRACE=1
 
 
 %changelog
+* Wed May 05 2021 Richard W.M. Jones <rjones@redhat.com> - 1.25.7-1
+- New upstream version 1.25.7.
+- Disable libguestfs tests on riscv64.
+
 * Sat Apr 10 2021 Richard W.M. Jones <rjones@redhat.com> - 1.25.6-1
 - New upstream version 1.25.6.
 
diff --git a/sources b/sources
index 22a1133..db5b068 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (nbdkit-1.25.6.tar.gz) = 127234467e6a13718c9f6f5581f7e26f98f8478d40717f53a00309fa29c16879da3e91c93e5e5dacbe769ca399f80a021ed37dd8be9da8b5a8f8617459c77b66
-SHA512 (nbdkit-1.25.6.tar.gz.sig) = 2ab74a238f419aad808193cd2f76742a943cbfcd0f2748f519261cd496b2a45b905ffb64559ff59b99136174dc7ea56e320688787a08a51cd166dbb3dfa087fc
+SHA512 (nbdkit-1.25.7.tar.gz) = a4ff0045971bddb89ace27968f4248c1302fbc9aa7e19a417f3bb79e78c531cf9a561c5dccb66580378a0f6b2bbe7b344ba7a6eb88e3bc3bf2dedb275bfeafff
+SHA512 (nbdkit-1.25.7.tar.gz.sig) = f28c2aeaaa142767408d537d3e01437c24385c22e6a20cccb76edd6c9edc3fb82dc835cf65dcc4718bed90e31c458bbfe3b205bb3557013ed2ae2164321b080d