diff --git a/Makefile b/Makefile
index 45f02494f..b0ecbe7fc 100644
--- a/Makefile
+++ b/Makefile
@@ -69,7 +69,7 @@ help:
 	@echo
 	@echo "   [Tool Installers]"
 	@echo "     qt_sdk_install       - Install the QT v4.7.3 tools"
-	@echo "     arm_sdk_install      - Install the Code Sourcery ARM gcc toolchain"
+	@echo "     arm_sdk_install      - Install the GNU ARM gcc toolchain"
 	@echo "     openocd_install      - Install the OpenOCD JTAG daemon"
 	@echo "     stm32flash_install   - Install the stm32flash tool for unbricking boards"
 	@echo "     dfuutil_install      - Install the dfu-util tool for unbricking F4-based boards"
@@ -192,10 +192,10 @@ qt_sdk_clean:
 	$(V1) [ ! -d "$(QT_SDK_DIR)" ] || $(RM) -rf $(QT_SDK_DIR)
 
 # Set up ARM (STM32) SDK
-ARM_SDK_DIR := $(TOOLS_DIR)/arm-2011.03
+ARM_SDK_DIR := $(TOOLS_DIR)/gcc-arm-none-eabi-4_6-2012q1
 
 .PHONY: arm_sdk_install
-arm_sdk_install: ARM_SDK_URL  := https://sourcery.mentor.com/sgpp/lite/arm/portal/package8736/public/arm-none-eabi/arm-2011.03-42-arm-none-eabi-i686-pc-linux-gnu.tar.bz2
+arm_sdk_install: ARM_SDK_URL  := https://launchpad.net/gcc-arm-embedded/4.6/4.6-2012-q1-update/+download/gcc-arm-none-eabi-4_6-2012q1-20120316.tar.bz2
 arm_sdk_install: ARM_SDK_FILE := $(notdir $(ARM_SDK_URL))
 # order-only prereq on directory existance:
 arm_sdk_install: | $(DL_DIR) $(TOOLS_DIR)