diff --git a/build/linux/avr-toolchain-linux32-gcc-4.8.1.zip.sha b/build/linux/avr-toolchain-linux32-gcc-4.8.1.zip.sha
index d9d2abaef..88d2ab8ea 100644
--- a/build/linux/avr-toolchain-linux32-gcc-4.8.1.zip.sha
+++ b/build/linux/avr-toolchain-linux32-gcc-4.8.1.zip.sha
@@ -1 +1 @@
-532f31624a22d4b25813c04b2761ecf3814acecf
+60f9edb4dd033109e22ee9e87cb6f45efd15882e
diff --git a/build/linux/avr-toolchain-linux64-gcc-4.8.1.zip.sha b/build/linux/avr-toolchain-linux64-gcc-4.8.1.zip.sha
index dc7e306f4..2cb2bdfec 100644
--- a/build/linux/avr-toolchain-linux64-gcc-4.8.1.zip.sha
+++ b/build/linux/avr-toolchain-linux64-gcc-4.8.1.zip.sha
@@ -1 +1 @@
-f5cacd4ffe71802c0c269132dcb8d29290c54fbc
+5b0131ac2ccf20637d16ecc40a0ef2fae48fe73a
diff --git a/build/macosx/avr-toolchain-mac32-gcc-4.8.1.zip.sha b/build/macosx/avr-toolchain-mac32-gcc-4.8.1.zip.sha
index 18a35d3ed..19cd41f7b 100644
--- a/build/macosx/avr-toolchain-mac32-gcc-4.8.1.zip.sha
+++ b/build/macosx/avr-toolchain-mac32-gcc-4.8.1.zip.sha
@@ -1 +1 @@
-fa419cbec48bdef8f0945b718a809f264c750df4
+c1c15b14ede121884d17c0360e1f1ad15fb5c98f
diff --git a/build/windows/avr-toolchain-win32-gcc-4.8.1.zip.sha b/build/windows/avr-toolchain-win32-gcc-4.8.1.zip.sha
index 30922d18f..e3946fb0d 100644
--- a/build/windows/avr-toolchain-win32-gcc-4.8.1.zip.sha
+++ b/build/windows/avr-toolchain-win32-gcc-4.8.1.zip.sha
@@ -1 +1 @@
-b2ff1de8622322e3a54342fd532af5099dfda376
+21577a37f6f438a25903a3338c448385c0c87aeb