diff --git a/gnuhealth.sh b/gnuhealth.sh
index 19de10a..a8a5f4c 100755
--- a/gnuhealth.sh
+++ b/gnuhealth.sh
@@ -20,7 +20,10 @@ mv /srv/gnuhealth-3.2.8 /srv/gnuhealth
 rm -f /tmp/gnuhealth.tgz
 
 # Clone Sao (Tryton web client) repository
-git clone --depth 1 https://github.com/tryton/sao /srv/gnuhealth/sao
+git clone -b 4.2 --single-branch --depth 1 https://github.com/tryton/sao /srv/gnuhealth/sao
+
+# Apply Sao (Tryton web client) dependencies patch
+patch -d /srv/gnuhealth/sao -p0 <${SOURCE_DIR}/gnuhealth/gnuhealth-sao-dependencies.patch
 
 # Create Python virtualenv
 virtualenv --system-site-packages -p /usr/bin/python3 /srv/gnuhealth
diff --git a/gnuhealth/gnuhealth-sao-dependencies.patch b/gnuhealth/gnuhealth-sao-dependencies.patch
new file mode 100644
index 0000000..592ea0b
--- /dev/null
+++ b/gnuhealth/gnuhealth-sao-dependencies.patch
@@ -0,0 +1,16 @@
+--- package.bak	2017-12-03 23:27:54.280162096 +0100
++++ package.json	2017-12-03 23:29:24.384721720 +0100
+@@ -54,6 +54,13 @@
+     "tryton"
+   ],
+   "dependencies": {
++    "grunt": "^0.4",
++    "grunt-cli": "^0.1",
++    "grunt-contrib-concat": "^0.5",
++    "grunt-contrib-jshint": "^0.11",
++    "grunt-contrib-uglify": "^0.9",
++    "grunt-contrib-less": "^1.2",
++    "grunt-po2json": "^0.3",
+     "bower": "^1.7"
+   }
+ }