diff --git a/bin/update-spec.sh b/bin/update-spec.sh
new file mode 100755
index 00000000000..6c2537501f8
--- /dev/null
+++ b/bin/update-spec.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+SCRIPT="$0"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=`dirname "$SCRIPT"`/..
+  APP_DIR=`cd "${APP_DIR}"; pwd`
+fi
+
+cd $APP_DIR
+
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
+ags="com.wordnik.swagger.codegen.SpecConverter $@"
+
+if [ -f $APP_DIR/target/scala-2.9.1/swagger-codegen.jar ]; then
+  java -cp target/scala-2.9.1/swagger-codegen.jar $ags
+elif [[ -f $APP_DIR/target/scala-2.10/swagger-codegen.jar  ]]; then
+  java -cp target/scala-2.10/swagger-codegen.jar $ags
+else
+  ./sbt assembly
+  java -cp target/swagger-codegen.jar $ags
+fi
+