diff --git a/build.xml b/build.xml
index 1799c9a7..a6f12818 100644
--- a/build.xml
+++ b/build.xml
@@ -81,9 +81,9 @@
   </target>
 
   <!-- adds readField and writeField methods to Stremable classes -->
-  <target name="procstream">
-    <taskdef name="instream" classpathref="classpath"
-             classname="com.threerings.presents.tools.InstrumentStreamableTask"/>
+  <target name="procstream" depends="prepare">
+    <taskdef resource="com/threerings/presents/tools.properties"
+             classpath="${deploy.dir}/lib/narya-tools.jar"/>
     <!-- now instrument the associated files -->
     <instream outdir="${classes.dir}">
       <path refid="classpath"/>
diff --git a/etc/libs-incl.xml b/etc/libs-incl.xml
index 4a11b290..382e3a81 100644
--- a/etc/libs-incl.xml
+++ b/etc/libs-incl.xml
@@ -18,6 +18,7 @@
     <include name="samskivert.jar"/>
     <include name="narya-base*.jar"/>
     <include name="narya-distrib*.jar"/>
+    <include name="narya-tools*.jar"/>
     <!-- these LWJGL, JME and JME-BUI libraries are optional -->
     <include name="lwjgl.jar"/>
     <include name="lwjgl_util.jar"/>