diff --git a/build.sbt b/build.sbt
index 697c9bc..59037f4 100644
--- a/build.sbt
+++ b/build.sbt
@@ -14,7 +14,7 @@ developers += Developer(
 addSbtJsEngine("1.3.5")
 
 libraryDependencies ++= Seq(
-  "org.webjars" % "coffee-script-node" % "1.11.0",
+  "org.webjars.npm" % "coffeescript" % "2.7.0",
   "org.webjars" % "mkdirp" % "0.5.0"
 )
 
diff --git a/src/main/resources/coffee.js b/src/main/resources/coffee.js
index ae8ac11..c7dc93d 100644
--- a/src/main/resources/coffee.js
+++ b/src/main/resources/coffee.js
@@ -6,7 +6,7 @@
 
     var args = process.argv,
         fs = require("fs"),
-        coffeeScript = require("coffee-script"),
+        coffeeScript = require("coffeescript"),
         mkdirp = require("mkdirp"),
         path = require("path");
 
diff --git a/src/sbt-test/sbt-coffeescript-plugin/coffee/build.sbt b/src/sbt-test/sbt-coffeescript-plugin/coffee/build.sbt
index 510fc92..2dbd1d7 100644
--- a/src/sbt-test/sbt-coffeescript-plugin/coffee/build.sbt
+++ b/src/sbt-test/sbt-coffeescript-plugin/coffee/build.sbt
@@ -12,7 +12,10 @@ checkMapFileContents := {
                     |    "a.coffee"
                     |  ],
                     |  "names": [],
-                    |  "mappings": "AAAA;AAAA,MAAA;;EAAA,MAAA,GAAW;;EACX,QAAA,GAAW;AADX"
+                    |  "mappings": "AAAA;AAAA,MAAA,MAAA,EAAA;;EAAA,MAAA,GAAW;;EACX,QAAA,GAAW;AADX",
+                    |  "sourcesContent": [
+                    |    "number   = 42\nopposite = true\n"
+                    |  ]
                     |}""".stripMargin) {
     sys.error(s"Unexpected contents: $contents")
   }
diff --git a/src/sbt-test/sbt-coffeescript-plugin/coffee/project/plugins.sbt b/src/sbt-test/sbt-coffeescript-plugin/coffee/project/plugins.sbt
index dce98e6..0972c99 100644
--- a/src/sbt-test/sbt-coffeescript-plugin/coffee/project/plugins.sbt
+++ b/src/sbt-test/sbt-coffeescript-plugin/coffee/project/plugins.sbt
@@ -1 +1,5 @@
-addSbtPlugin("com.github.sbt" % "sbt-coffeescript" % sys.props("project.version"))
+sys.props.get("project.version") match {
+  case Some(x) => addSbtPlugin("com.github.sbt" % "sbt-coffeescript" % x)
+  case _ => sys.error("""|The system property 'project.version' is not defined.
+                         |Specify this property using the scriptedLaunchOpts -D.""".stripMargin)
+}
diff --git a/src/sbt-test/sbt-coffeescript-plugin/error-output/project/plugins.sbt b/src/sbt-test/sbt-coffeescript-plugin/error-output/project/plugins.sbt
index dce98e6..0972c99 100644
--- a/src/sbt-test/sbt-coffeescript-plugin/error-output/project/plugins.sbt
+++ b/src/sbt-test/sbt-coffeescript-plugin/error-output/project/plugins.sbt
@@ -1 +1,5 @@
-addSbtPlugin("com.github.sbt" % "sbt-coffeescript" % sys.props("project.version"))
+sys.props.get("project.version") match {
+  case Some(x) => addSbtPlugin("com.github.sbt" % "sbt-coffeescript" % x)
+  case _ => sys.error("""|The system property 'project.version' is not defined.
+                         |Specify this property using the scriptedLaunchOpts -D.""".stripMargin)
+}