diff --git a/build/arduino-builder-linux32-1.3.8-dev-parallel.tar.bz2.sha b/build/arduino-builder-linux32-1.3.8-dev-parallel.tar.bz2.sha
new file mode 100644
index 00000000000..8ad65bb150b
--- /dev/null
+++ b/build/arduino-builder-linux32-1.3.8-dev-parallel.tar.bz2.sha
@@ -0,0 +1 @@
+00744eb02d3180986229a6f2c65761de480066bd
diff --git a/build/arduino-builder-linux32-1.3.8.tar.bz2.sha b/build/arduino-builder-linux32-1.3.8.tar.bz2.sha
deleted file mode 100644
index 87edd829e7b..00000000000
--- a/build/arduino-builder-linux32-1.3.8.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-bfb3fec7c2252e434fdf9c265a6ee0964c08d0f3
diff --git a/build/arduino-builder-linux64-1.3.8-dev-parallel.tar.bz2.sha b/build/arduino-builder-linux64-1.3.8-dev-parallel.tar.bz2.sha
new file mode 100644
index 00000000000..c6b093ce309
--- /dev/null
+++ b/build/arduino-builder-linux64-1.3.8-dev-parallel.tar.bz2.sha
@@ -0,0 +1 @@
+6766d7288c522fa4333d6c35855e1b1c6b1f5bd4
diff --git a/build/arduino-builder-linux64-1.3.8.tar.bz2.sha b/build/arduino-builder-linux64-1.3.8.tar.bz2.sha
deleted file mode 100644
index b24f34c5760..00000000000
--- a/build/arduino-builder-linux64-1.3.8.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-62899b02a0fbc753edb7bae8c0495421c1aa2cc3
diff --git a/build/arduino-builder-macosx-1.3.8-dev-parallel.tar.bz2.sha b/build/arduino-builder-macosx-1.3.8-dev-parallel.tar.bz2.sha
new file mode 100644
index 00000000000..a57fd53f846
--- /dev/null
+++ b/build/arduino-builder-macosx-1.3.8-dev-parallel.tar.bz2.sha
@@ -0,0 +1 @@
+d598a5260824e8e91368cf2deeda9e98f8642e69
diff --git a/build/arduino-builder-macosx-1.3.8.tar.bz2.sha b/build/arduino-builder-macosx-1.3.8.tar.bz2.sha
deleted file mode 100644
index 0e5145e37ca..00000000000
--- a/build/arduino-builder-macosx-1.3.8.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-4d389dd3070143465410159f6a82c1bfb48c0d32
diff --git a/build/arduino-builder-windows-1.3.8-dev-parallel.zip.sha b/build/arduino-builder-windows-1.3.8-dev-parallel.zip.sha
new file mode 100644
index 00000000000..41128ea778f
--- /dev/null
+++ b/build/arduino-builder-windows-1.3.8-dev-parallel.zip.sha
@@ -0,0 +1 @@
+e1056665b368f156411e5fc9a600bd6af511a16c
diff --git a/build/arduino-builder-windows-1.3.8.zip.sha b/build/arduino-builder-windows-1.3.8.zip.sha
deleted file mode 100644
index c128b691048..00000000000
--- a/build/arduino-builder-windows-1.3.8.zip.sha
+++ /dev/null
@@ -1 +0,0 @@
-0f53b4975c115f22cc3d3b600ef2370e03a3706b
diff --git a/build/build.xml b/build/build.xml
index c73a535e1ec..87bb745fe1f 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -73,7 +73,7 @@
 
   <property name="portable" value="false" />
 
-  <property name="ARDUINO-BUILDER-VERSION" value="1.3.8" />
+  <property name="ARDUINO-BUILDER-VERSION" value="1.3.8-dev-parallel" />
 
   <!-- Libraries required for running arduino -->
   <fileset dir=".." id="runtime.jars">