diff --git a/build/build.xml b/build/build.xml
index dffb710b3..84c9b36ce 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -258,9 +258,9 @@
     </antcall>
 
     <antcall target="unzip-arm-toolchain">
-      <param name="dist_file" value="gcc-arm-none-eabi-4.8.3-2013q4-mac.tar.gz" />
-      <param name="dist_url" value="http://downloads.arduino.cc/gcc-arm-none-eabi-4.8.3-2013q4-mac.tar.gz" />
-      <param name="dist_check_file" value="gcc-arm-none-eabi-4.8.3-2013q4" />
+      <param name="dist_file" value="gcc-arm-none-eabi-4.8.3-2014q1-mac.tar.gz" />
+      <param name="dist_url" value="http://downloads.arduino.cc/gcc-arm-none-eabi-4.8.3-2014q1-mac.tar.gz" />
+      <param name="dist_check_file" value="gcc-arm-none-eabi-4.8.3-2014q1" />
     </antcall>
 
     <delete includeEmptyDirs="true" quiet="true">
@@ -490,9 +490,9 @@
   <target name="linux32-build" depends="linux-build" description="Build linux (32-bit) version">
     <!-- Unzip ARM tools -->
     <antcall target="unzip-arm-toolchain">
-      <param name="dist_file" value="gcc-arm-none-eabi-4.8.3-2013q4-linux32.tar.gz" />
-      <param name="dist_url" value="http://downloads.arduino.cc/gcc-arm-none-eabi-4.8.3-2013q4-linux32.tar.gz" />
-      <param name="dist_check_file" value="gcc-arm-none-eabi-4.8.3-2013q4" />
+      <param name="dist_file" value="gcc-arm-none-eabi-4.8.3-2014q1-linux32.tar.gz" />
+      <param name="dist_url" value="http://downloads.arduino.cc/gcc-arm-none-eabi-4.8.3-2014q1-linux32.tar.gz" />
+      <param name="dist_check_file" value="gcc-arm-none-eabi-4.8.3-2014q1" />
     </antcall>
 
     <!-- Unzip AVR tools -->
@@ -504,9 +504,9 @@
   <target name="linux64-build" depends="linux-build" description="Build linux (64-bit) version">
     <!-- Unzip ARM tools -->
     <antcall target="unzip-tool">
-      <param name="dist_file" value="gcc-arm-none-eabi-4.8.3-2013q4-linux64.tar.gz" />
-      <param name="dist_url" value="http://downloads.arduino.cc/gcc-arm-none-eabi-4.8.3-2013q4-linux64.tar.gz" />
-      <param name="dist_check_file" value="gcc-arm-none-eabi-4.8.3-2013q4" />
+      <param name="dist_file" value="gcc-arm-none-eabi-4.8.3-2014q1-linux64.tar.gz" />
+      <param name="dist_url" value="http://downloads.arduino.cc/gcc-arm-none-eabi-4.8.3-2014q1-linux64.tar.gz" />
+      <param name="dist_check_file" value="gcc-arm-none-eabi-4.8.3-2014q1" />
     </antcall>
 
     <!-- Unzip AVR tools -->
@@ -783,9 +783,9 @@
 
     <!-- Unzip ARM toolchain -->
     <antcall target="unzip-arm-toolchain">
-      <param name="dist_file" value="gcc-arm-none-eabi-4.8.3-2013q4-windows.tar.gz" />
-      <param name="dist_url" value="http://downloads.arduino.cc/gcc-arm-none-eabi-4.8.3-2013q4-windows.tar.gz" />
-      <param name="dist_check_file" value="gcc-arm-none-eabi-4.8.3-2013q4" />
+      <param name="dist_file" value="gcc-arm-none-eabi-4.8.3-2014q1-windows.tar.gz" />
+      <param name="dist_url" value="http://downloads.arduino.cc/gcc-arm-none-eabi-4.8.3-2014q1-windows.tar.gz" />
+      <param name="dist_check_file" value="gcc-arm-none-eabi-4.8.3-2014q1" />
     </antcall>
 
     <delete includeEmptyDirs="true" quiet="true">
diff --git a/build/linux/dist/gcc-arm-none-eabi-4.8.3-2013q4-linux32.tar.gz.sha b/build/linux/dist/gcc-arm-none-eabi-4.8.3-2013q4-linux32.tar.gz.sha
deleted file mode 100644
index a9e7a1d6b..000000000
--- a/build/linux/dist/gcc-arm-none-eabi-4.8.3-2013q4-linux32.tar.gz.sha
+++ /dev/null
@@ -1 +0,0 @@
-3d3cbb6ab5b48e822c6c270e8c8fdaa23b6690f8
diff --git a/build/linux/dist/gcc-arm-none-eabi-4.8.3-2013q4-linux64.tar.gz.sha b/build/linux/dist/gcc-arm-none-eabi-4.8.3-2013q4-linux64.tar.gz.sha
deleted file mode 100644
index 9cb8d7e89..000000000
--- a/build/linux/dist/gcc-arm-none-eabi-4.8.3-2013q4-linux64.tar.gz.sha
+++ /dev/null
@@ -1 +0,0 @@
-a77fe161944ea06b86ead50692a594aba161bd7f
diff --git a/build/linux/dist/gcc-arm-none-eabi-4.8.3-2014q1-linux32.tar.gz.sha b/build/linux/dist/gcc-arm-none-eabi-4.8.3-2014q1-linux32.tar.gz.sha
new file mode 100644
index 000000000..ae1fe709b
--- /dev/null
+++ b/build/linux/dist/gcc-arm-none-eabi-4.8.3-2014q1-linux32.tar.gz.sha
@@ -0,0 +1 @@
+20500b304b2b7c08a699cdd25564003aaf78088e
diff --git a/build/linux/dist/gcc-arm-none-eabi-4.8.3-2014q1-linux64.tar.gz.sha b/build/linux/dist/gcc-arm-none-eabi-4.8.3-2014q1-linux64.tar.gz.sha
new file mode 100644
index 000000000..3bb527beb
--- /dev/null
+++ b/build/linux/dist/gcc-arm-none-eabi-4.8.3-2014q1-linux64.tar.gz.sha
@@ -0,0 +1 @@
+194309bbe4b442c5047ad2887e252ed49b6c4758
diff --git a/build/macosx/dist/gcc-arm-none-eabi-4.8.3-2013q4-mac.tar.gz.sha b/build/macosx/dist/gcc-arm-none-eabi-4.8.3-2013q4-mac.tar.gz.sha
deleted file mode 100644
index 6f99de9e6..000000000
--- a/build/macosx/dist/gcc-arm-none-eabi-4.8.3-2013q4-mac.tar.gz.sha
+++ /dev/null
@@ -1 +0,0 @@
-38dd8968003bf4e69e9ec55d0a92e5993ef3d66b
diff --git a/build/macosx/dist/gcc-arm-none-eabi-4.8.3-2014q1-mac.tar.gz.sha b/build/macosx/dist/gcc-arm-none-eabi-4.8.3-2014q1-mac.tar.gz.sha
new file mode 100644
index 000000000..be7d3b12e
--- /dev/null
+++ b/build/macosx/dist/gcc-arm-none-eabi-4.8.3-2014q1-mac.tar.gz.sha
@@ -0,0 +1 @@
+b9510ef55d65d191ec3ed973da84d2ee2844fb06
diff --git a/build/shared/revisions.txt b/build/shared/revisions.txt
index 769454095..d0c173148 100644
--- a/build/shared/revisions.txt
+++ b/build/shared/revisions.txt
@@ -2,7 +2,7 @@ ARDUINO 1.5.7 BETA
 
 [core]
 * Upgraded AVR toolchain: gcc 4.8.1, avr-libc 1.8.0
-* Upgraded ARM toolchain: gcc 4.8.3
+* Upgraded ARM toolchain: gcc 4.8.3-2014q1
 * Upgraded avrdude to version 6.0.1
 * ARM gcc doesn't require ia32-libs anymore on 64 bits linux systems
 * avr: Improved USB-CDC write speed (Justin Rajewski)
diff --git a/build/windows/dist/gcc-arm-none-eabi-4.8.3-2013q4-windows.tar.gz.sha b/build/windows/dist/gcc-arm-none-eabi-4.8.3-2013q4-windows.tar.gz.sha
deleted file mode 100644
index fbc42d8f5..000000000
--- a/build/windows/dist/gcc-arm-none-eabi-4.8.3-2013q4-windows.tar.gz.sha
+++ /dev/null
@@ -1 +0,0 @@
-d9ef21ecb5c303690b135efcb80548a11cba449b
diff --git a/build/windows/dist/gcc-arm-none-eabi-4.8.3-2014q1-windows.tar.gz.sha b/build/windows/dist/gcc-arm-none-eabi-4.8.3-2014q1-windows.tar.gz.sha
new file mode 100644
index 000000000..e5013dcba
--- /dev/null
+++ b/build/windows/dist/gcc-arm-none-eabi-4.8.3-2014q1-windows.tar.gz.sha
@@ -0,0 +1 @@
+7b309df740cdddb6d4d252fffc8db7a170448814
diff --git a/hardware/arduino/sam/platform.txt b/hardware/arduino/sam/platform.txt
index 817bbb27b..6f5c1fcbe 100644
--- a/hardware/arduino/sam/platform.txt
+++ b/hardware/arduino/sam/platform.txt
@@ -10,7 +10,7 @@ version=1.5.6
 # SAM3 compile variables
 # ----------------------
 
-compiler.path={runtime.ide.path}/hardware/tools/gcc-arm-none-eabi-4.8.3-2013q4/bin/
+compiler.path={runtime.ide.path}/hardware/tools/gcc-arm-none-eabi-4.8.3-2014q1/bin/
 compiler.c.cmd=arm-none-eabi-gcc
 compiler.c.flags=-c -g -Os -w -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -Dprintf=iprintf
 compiler.c.elf.cmd=arm-none-eabi-g++