diff --git a/build/arduino-builder-linux32-1.4.2.tar.bz2.sha b/build/arduino-builder-linux32-1.4.2.tar.bz2.sha
deleted file mode 100644
index 4b4bb8eb3..000000000
--- a/build/arduino-builder-linux32-1.4.2.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-b437a66318434ffaa5d1774090880f89e763693a
diff --git a/build/arduino-builder-linux32-1.4.3.tar.bz2.sha b/build/arduino-builder-linux32-1.4.3.tar.bz2.sha
new file mode 100644
index 000000000..b334fdcc0
--- /dev/null
+++ b/build/arduino-builder-linux32-1.4.3.tar.bz2.sha
@@ -0,0 +1 @@
+d4b621712d9fdc5e487195e9b1ff53d25a4b8808
diff --git a/build/arduino-builder-linux64-1.4.2.tar.bz2.sha b/build/arduino-builder-linux64-1.4.2.tar.bz2.sha
deleted file mode 100644
index 969b98103..000000000
--- a/build/arduino-builder-linux64-1.4.2.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-4778eb4c1c98a0560aac99730264623fad93a674
diff --git a/build/arduino-builder-linux64-1.4.3.tar.bz2.sha b/build/arduino-builder-linux64-1.4.3.tar.bz2.sha
new file mode 100644
index 000000000..5157eb034
--- /dev/null
+++ b/build/arduino-builder-linux64-1.4.3.tar.bz2.sha
@@ -0,0 +1 @@
+f3eb86770afb69052a644ea9996c39c2b5c2c7ec
diff --git a/build/arduino-builder-linuxaarch64-1.4.2.tar.bz2.sha b/build/arduino-builder-linuxaarch64-1.4.2.tar.bz2.sha
deleted file mode 100644
index c0148fefa..000000000
--- a/build/arduino-builder-linuxaarch64-1.4.2.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-f32428723b7e05bf29bb19bc3e0c6e3621c796e4
diff --git a/build/arduino-builder-linuxaarch64-1.4.3.tar.bz2.sha b/build/arduino-builder-linuxaarch64-1.4.3.tar.bz2.sha
new file mode 100644
index 000000000..faa9ca095
--- /dev/null
+++ b/build/arduino-builder-linuxaarch64-1.4.3.tar.bz2.sha
@@ -0,0 +1 @@
+45f1234ded19c56ef1e3fdea781c3dd19b766eb6
diff --git a/build/arduino-builder-linuxarm-1.4.2.tar.bz2.sha b/build/arduino-builder-linuxarm-1.4.2.tar.bz2.sha
deleted file mode 100644
index 05a3e6c65..000000000
--- a/build/arduino-builder-linuxarm-1.4.2.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-42852e3fcb49c1a21122210614869f7e911f2751
diff --git a/build/arduino-builder-linuxarm-1.4.3.tar.bz2.sha b/build/arduino-builder-linuxarm-1.4.3.tar.bz2.sha
new file mode 100644
index 000000000..73297320d
--- /dev/null
+++ b/build/arduino-builder-linuxarm-1.4.3.tar.bz2.sha
@@ -0,0 +1 @@
+d3522d8f2025fbf376ce3a7a47304063ecc2fef2
diff --git a/build/arduino-builder-macosx-1.4.2.tar.bz2.sha b/build/arduino-builder-macosx-1.4.2.tar.bz2.sha
deleted file mode 100644
index 099afe2e1..000000000
--- a/build/arduino-builder-macosx-1.4.2.tar.bz2.sha
+++ /dev/null
@@ -1 +0,0 @@
-a6243ba307c214b3f6fe2bba359b6c76905a8be8
diff --git a/build/arduino-builder-macosx-1.4.3.tar.bz2.sha b/build/arduino-builder-macosx-1.4.3.tar.bz2.sha
new file mode 100644
index 000000000..0863c1183
--- /dev/null
+++ b/build/arduino-builder-macosx-1.4.3.tar.bz2.sha
@@ -0,0 +1 @@
+289eaa1a777b71af260c528f157ad81c92d26a1e
diff --git a/build/arduino-builder-windows-1.4.2.zip.sha b/build/arduino-builder-windows-1.4.2.zip.sha
deleted file mode 100644
index 92f60b18a..000000000
--- a/build/arduino-builder-windows-1.4.2.zip.sha
+++ /dev/null
@@ -1 +0,0 @@
-3c247b0eacc9d842270f7e5ad5fe901a0967fe43
diff --git a/build/arduino-builder-windows-1.4.3.zip.sha b/build/arduino-builder-windows-1.4.3.zip.sha
new file mode 100644
index 000000000..d72585cd2
--- /dev/null
+++ b/build/arduino-builder-windows-1.4.3.zip.sha
@@ -0,0 +1 @@
+db213710291fd6cfacb62d015db1b89b2e0d44d2
diff --git a/build/build.xml b/build/build.xml
index 7ec1218aa..5659d65f8 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -99,7 +99,7 @@
 
   <property name="portable" value="false" />
 
-  <property name="ARDUINO-BUILDER-VERSION" value="1.4.2" />
+  <property name="ARDUINO-BUILDER-VERSION" value="1.4.3" />
   <property name="LIBLISTSERIAL-VERSION" value="1.4.2" />
   <property name="AVRGCC-VERSION" value="5.4.0-atmel3.6.1-arduino2" />
   <property name="AVRDUDE-VERSION" value="6.3.0-arduino14" />