diff --git a/ChangeLog b/ChangeLog
index 8306cb4a12289e39b1dc4c4195b27e32c4d6e578..0424cec1ff4eb4f6497e52ae9745cb76d69a0e3e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2020-04-06  Niels Möller  <nisse@lysator.liu.se>
+
+	* configure.ac (LIBHOGWEED_MAJOR): Increase hogweed version number
+	to 6.0, at request of Gnutls team.
+	(LIBHOGWEED_MINOR): Reset to zero.
+
 2020-04-01  Niels Möller  <nisse@lysator.liu.se>
 
 	* config.guess: Update to 2020-01-01 version, from savannah's
diff --git a/configure.ac b/configure.ac
index 2ad6228462f863265606cf3932fd01f30a3c86d7..dcc8e421eeeb59d14776bf634df6ef41a8546310 100644
--- a/configure.ac
+++ b/configure.ac
@@ -13,8 +13,8 @@ AC_CONFIG_HEADER([config.h])
 LIBNETTLE_MAJOR=7
 LIBNETTLE_MINOR=1
 
-LIBHOGWEED_MAJOR=5
-LIBHOGWEED_MINOR=1
+LIBHOGWEED_MAJOR=6
+LIBHOGWEED_MINOR=0
 
 dnl Note double square brackets, for extra m4 quoting.
 MAJOR_VERSION=`echo $PACKAGE_VERSION | sed 's/^\([[^.]]*\)\..*/\1/'`