diff --git a/bump_version.sh b/bump_version.sh
index d325104..26c4fa2 100755
--- a/bump_version.sh
+++ b/bump_version.sh
@@ -1,16 +1,17 @@
 #!/bin/bash
 current_version=$(git describe --tags --abbrev=0)
-cp library.json.skeleton library.json
-while ifs= read -r line; do
-  name=$(echo "$line" | sed "s/=.*//g")
-  value=$(echo "$line" | cut -d= -f 2 | sed 's/"//g')
-  sed -i "s/#$name/$value/g" library.json
-done < library.properties
-
+if [ "$1" == "-d" ]; then
+  do=0
+  shift
+else
+  do=1
+fi
 if [ "$1" == "" ]; then
 	echo
-	echo "Syntax: $0 {new_version}"
+	echo "Syntax: $0 [-d] {new_version}"
 	echo
+	echo "  -d : dry run, generate json and update properties but do not run git commands"
+	echo ""
 	echo "  Current version: $current_version"
 	echo
 else
@@ -23,15 +24,35 @@ else
 		grep $current_version library.properties
 		if [ "$?" == "0" ]; then
 			sed -i "s/$current_version/$1/" library.properties
-			if [ 0 == 1 ]; then
+
+      cp library.json.skeleton library.json
+      while ifs= read -r line; do
+        name=$(echo "$line" | sed "s/=.*//g")
+        value=$(echo "$line" | cut -d= -f 2 | sed 's/"//g')
+        echo "  Replacing $name in json"
+        if [ "$name" == "depends" ]; then
+          depends=$(echo "$value" | sed "s/,/ /g")
+          echo "  Depends=$depends"
+        fi
+        echo "  " sed -i "s@#$name@$value@g" library.json
+        sed -i "s@#$name@$value@g" library.json
+      done < library.properties
+      deps=""
+      for depend in $depends; do
+        if [ "$deps" != "" ]; then
+          deps="$deps, "
+        fi
+        deps="$deps'$depend' : '*'"
+      done
+      sed -i "s@#dependencies@$deps@g" library.json
+      sed -i "s/'/\"/g" library.json
+      if [ "$do" == "1" ]; then
         git tag $1
         git add library.properties
         git add library.json
         git commit -m "Release $1"
         git push
         git push --tags
-      else
-        echo "No git operation made"
       fi
 		else
 			echo "Current version does not match library.property version, aborting"
diff --git a/library.json b/library.json
index d21aa57..9f6c0b5 100644
--- a/library.json
+++ b/library.json
@@ -8,7 +8,7 @@
     },
     "dependencies":
     { "hsaturn/TinyConsole" : "*" },
-    "version": "0.9.17",
+    "version": "0.9.18",
     "exclude": "",
     "examples": "examples/*/*.ino",
     "frameworks": "arduino",
diff --git a/library.json.skeleton b/library.json.skeleton
index 78b634a..a8765b0 100644
--- a/library.json.skeleton
+++ b/library.json.skeleton
@@ -6,6 +6,8 @@
         "type": "git",
         "url": "https://github.com/hsaturn/TinyMqtt.git"
     },
+    "dependencies":
+    { #dependencies },
     "version": "#version",
     "exclude": "",
     "examples": "examples/*/*.ino",
diff --git a/library.properties b/library.properties
index 25adb42..817bd61 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=TinyMqtt
-version=0.9.17
+version=0.9.18
 author=Francois BIOT, HSaturn, <hsaturn@gmail.com>
 maintainer=Francois BIOT <hsaturn@gmail.com>
 sentence=A tiny broker and client library for MQTT messaging.