diff --git a/net/strongswan/Makefile b/net/strongswan/Makefile
index b91f5e1b55..8e3d2fb29b 100644
--- a/net/strongswan/Makefile
+++ b/net/strongswan/Makefile
@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=strongswan
-PKG_VERSION:=5.4.0
+PKG_VERSION:=5.5.0
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=http://download.strongswan.org/ http://download2.strongswan.org/
-PKG_MD5SUM:=9d7c77b0da9b69f859624897e5e9ebbf
+PKG_MD5SUM:=a96fa7eb6c62b40143dadb064b6bd586
 PKG_LICENSE:=GPL-2.0+
 PKG_MAINTAINER:=Steven Barth <cyrus@openwrt.org>
 
@@ -382,7 +382,8 @@ CONFIGURE_ARGS+= \
 	--with-routing-table-prio="$(call qstrip,$(CONFIG_STRONGSWAN_ROUTING_TABLE_PRIO))" \
 	$(foreach m,$(PKG_MOD_AVAILABLE), \
 	  $(if $(CONFIG_PACKAGE_strongswan-mod-$(m)),--enable-$(m),--disable-$(m)) \
-	)
+	) \
+	ac_cv_search___atomic_load=no
 
 EXTRA_LDFLAGS+= -Wl,-rpath-link,$(STAGING_DIR)/usr/lib
 
diff --git a/net/strongswan/patches/101-musl-fixes.patch b/net/strongswan/patches/101-musl-fixes.patch
index a360d1cab9..ff7afa4eda 100644
--- a/net/strongswan/patches/101-musl-fixes.patch
+++ b/net/strongswan/patches/101-musl-fixes.patch
@@ -58,9 +58,9 @@
  
 +#include <musl.h>
 +
+ #define _GNU_SOURCE
  #include <sys/types.h>
  #include <sys/socket.h>
- #include <stdint.h>
 --- a/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c
 +++ b/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c
 @@ -37,6 +37,8 @@
diff --git a/net/strongswan/patches/210-sleep.patch b/net/strongswan/patches/210-sleep.patch
index 54b0efca5d..d8adec3d05 100644
--- a/net/strongswan/patches/210-sleep.patch
+++ b/net/strongswan/patches/210-sleep.patch
@@ -1,11 +1,11 @@
 --- a/src/ipsec/_ipsec.in
 +++ b/src/ipsec/_ipsec.in
 @@ -259,7 +259,7 @@ stop)
-			loop=110
-			while [ $loop -gt 0 ] ; do
-				kill -0 $spid 2>/dev/null || break
+ 			loop=110
+ 			while [ $loop -gt 0 ] ; do
+ 				kill -0 $spid 2>/dev/null || break
 -				sleep 0.1 2>/dev/null
 +				sleep 1 2>/dev/null
-				if [ $? -ne 0 ]
-				then
-					sleep 1
+ 				if [ $? -ne 0 ]
+ 				then
+ 					sleep 1
diff --git a/net/strongswan/patches/305-minimal_dh_plugin.patch b/net/strongswan/patches/305-minimal_dh_plugin.patch
index adf5fd8e79..597510f190 100644
--- a/net/strongswan/patches/305-minimal_dh_plugin.patch
+++ b/net/strongswan/patches/305-minimal_dh_plugin.patch
@@ -1,6 +1,6 @@
 --- a/configure.ac
 +++ b/configure.ac
-@@ -135,6 +135,7 @@ ARG_DISBL_SET([fips-prf],       [disable
+@@ -133,6 +133,7 @@ ARG_DISBL_SET([fips-prf],       [disable
  ARG_ENABL_SET([gcm],            [enables the GCM AEAD wrapper crypto plugin.])
  ARG_ENABL_SET([gcrypt],         [enables the libgcrypt plugin.])
  ARG_DISBL_SET([gmp],            [disable GNU MP (libgmp) based crypto implementation plugin.])
@@ -8,7 +8,7 @@
  ARG_DISBL_SET([hmac],           [disable HMAC crypto implementation plugin.])
  ARG_ENABL_SET([md4],            [enable MD4 software implementation plugin.])
  ARG_DISBL_SET([md5],            [disable MD5 software implementation plugin.])
-@@ -1325,6 +1326,7 @@ ADD_PLUGIN([gcrypt],               [s ch
+@@ -1347,6 +1348,7 @@ ADD_PLUGIN([gcrypt],               [s ch
  ADD_PLUGIN([af-alg],               [s charon scepclient pki scripts medsrv attest nm cmd aikgen])
  ADD_PLUGIN([fips-prf],             [s charon nm cmd])
  ADD_PLUGIN([gmp],                  [s charon scepclient pki scripts manager medsrv attest nm cmd aikgen])
@@ -16,7 +16,7 @@
  ADD_PLUGIN([agent],                [s charon nm cmd])
  ADD_PLUGIN([keychain],             [s charon cmd])
  ADD_PLUGIN([chapoly],              [s charon scripts nm cmd])
-@@ -1458,6 +1460,7 @@ AM_CONDITIONAL(USE_SHA2, test x$sha2 = x
+@@ -1480,6 +1482,7 @@ AM_CONDITIONAL(USE_SHA2, test x$sha2 = x
  AM_CONDITIONAL(USE_SHA3, test x$sha3 = xtrue)
  AM_CONDITIONAL(USE_FIPS_PRF, test x$fips_prf = xtrue)
  AM_CONDITIONAL(USE_GMP, test x$gmp = xtrue)
@@ -24,7 +24,7 @@
  AM_CONDITIONAL(USE_RDRAND, test x$rdrand = xtrue)
  AM_CONDITIONAL(USE_AESNI, test x$aesni = xtrue)
  AM_CONDITIONAL(USE_RANDOM, test x$random = xtrue)
-@@ -1707,6 +1710,7 @@ AC_CONFIG_FILES([
+@@ -1733,6 +1736,7 @@ AC_CONFIG_FILES([
  	src/libstrongswan/plugins/sha3/Makefile
  	src/libstrongswan/plugins/fips_prf/Makefile
  	src/libstrongswan/plugins/gmp/Makefile
@@ -34,7 +34,7 @@
  	src/libstrongswan/plugins/random/Makefile
 --- a/src/libstrongswan/Makefile.am
 +++ b/src/libstrongswan/Makefile.am
-@@ -305,6 +305,13 @@ if MONOLITHIC
+@@ -307,6 +307,13 @@ if MONOLITHIC
  endif
  endif