diff --git a/net/knot/Makefile b/net/knot/Makefile
index 608f1ad9a..d90341d46 100644
--- a/net/knot/Makefile
+++ b/net/knot/Makefile
@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=knot
-PKG_VERSION:=2.2.0
+PKG_VERSION:=2.2.1
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://secure.nic.cz/files/knot-dns/
-PKG_MD5SUM:=ac00a189038fd692c53b2e8c1837c5cb
+PKG_MD5SUM:=d573ecadedf4f15ec1f02671443520cb
 
 PKG_MAINTAINER:=Daniel Salzman <daniel.salzman@nic.cz>
 PKG_LICENSE:=GPL-3.0 LGPL-2.0 0BSD MIT OLDAP-2.8
diff --git a/net/knot/patches/04_hostname.patch b/net/knot/patches/04_hostname.patch
deleted file mode 100644
index 8e43189a0..000000000
--- a/net/knot/patches/04_hostname.patch
+++ /dev/null
@@ -1,37 +0,0 @@
-diff --git a/src/knot/conf/base.c b/src/knot/conf/base.c
-index 9a0a655..e4721ad 100644
---- a/src/knot/conf/base.c
-+++ b/src/knot/conf/base.c
-@@ -101,6 +101,10 @@ void conf_refresh_hostname(
- 
- 	free(conf->hostname);
- 	conf->hostname = sockaddr_hostname();
-+	if (conf->hostname == NULL) {
-+		// Empty hostname fallback, NULL cannot be passed to strlen!
-+		conf->hostname = strdup("");
-+	}
- }
- 
- static void init_cache(
-@@ -206,7 +210,7 @@ int conf_new(
- 
- 	// Cache the current hostname.
- 	if (!(flags & CONF_FNOHOSTNAME)) {
--		out->hostname = sockaddr_hostname();
-+		conf_refresh_hostname(out);
- 	}
- 
- 	// Initialize cached values.
-diff --git a/src/knot/modules/dnstap.c b/src/knot/modules/dnstap.c
-index 890663d..b60c1ca 100644
---- a/src/knot/modules/dnstap.c
-+++ b/src/knot/modules/dnstap.c
-@@ -241,7 +241,7 @@ int dnstap_load(struct query_plan *plan, struct query_module *self,
- 	} else {
- 		ctx->identity = sockaddr_hostname();
- 	}
--	ctx->identity_len = strlen(ctx->identity);
-+	ctx->identity_len = (ctx->identity != NULL) ? strlen(ctx->identity) : 0;
- 
- 	// Set version.
- 	val = conf_mod_get(self->config, MOD_VERSION, self->id);