diff --git a/recipes-external/binutils/binutils-external.inc b/recipes-external/binutils/binutils-external.inc
index b802015..0c921e9 100644
--- a/recipes-external/binutils/binutils-external.inc
+++ b/recipes-external/binutils/binutils-external.inc
@@ -3,7 +3,7 @@ HOMEPAGE = "http://www.gnu.org/software/binutils/"
 BUGTRACKER = "http://sourceware.org/bugzilla/"
 SECTION = "devel"
 PV := "${@external_run(d, 'ld', '-v').splitlines()[0].split()[-1].rstrip()}"
-LICENSE = "${@'GPLv3' if '${PV}'.split('.') > '2.17.50.0.12'.split('.') else 'GPLv2'}"
+LICENSE = "${@'GPL-3.0-only' if '${PV}'.split('.') > '2.17.50.0.12'.split('.') else 'GPL-2.0-only'}"
 
 binutils_binaries = "ar as ld ld.bfd ld.gold nm objcopy objdump ranlib strip \
                      addr2line c++filt elfedit gprof readelf size \
diff --git a/recipes-external/libnsl/libnsl2-external.bb b/recipes-external/libnsl/libnsl2-external.bb
index f7a4727..2a8ce5b 100644
--- a/recipes-external/libnsl/libnsl2-external.bb
+++ b/recipes-external/libnsl/libnsl2-external.bb
@@ -4,7 +4,7 @@ DESCRIPTION = "This library contains the public client interface for NIS(YP) and
                This recipe should work for extracting either the glibc or standalone libnsl \
                from the external toolchain."
 HOMEPAGE = "https://github.com/thkukuk/libnsl"
-LICENSE = "LGPL-2.1"
+LICENSE = "LGPL-2.1-only"
 LIC_FILES_CHKSUM = "file://COPYING;md5=4fbd65380cdd255951079008b364516c"
 SECTION = "libs"
 
diff --git a/recipes-external/libxcrypt/libxcrypt-external.bb b/recipes-external/libxcrypt/libxcrypt-external.bb
index a2729d6..ead8299 100644
--- a/recipes-external/libxcrypt/libxcrypt-external.bb
+++ b/recipes-external/libxcrypt/libxcrypt-external.bb
@@ -2,7 +2,7 @@ SUMMARY = "Extended cryptographic library (from glibc)"
 DESCRIPTION = "Forked code from glibc libary to extract only crypto part."
 HOMEPAGE = "https://github.com/besser82/libxcrypt"
 SECTION = "libs"
-LICENSE = "LGPLv2.1"
+LICENSE = "LGPL-2.1-only"
 PROVIDES = "virtual/crypt"
 
 inherit external-toolchain