diff --git a/Readme.md b/Readme.md
index 5febf97..1234227 100644
--- a/Readme.md
+++ b/Readme.md
@@ -3,7 +3,7 @@ Note: setup has been done on partially set up development machines. If, trying t
 ### Debian requirements
 
 ```bash
-sudo apt-get install build-essential gperf bison subversion texinfo zip automake
+sudo apt-get install build-essential gperf bison subversion texinfo zip automake autoconf2.64
 ```
 
 ### Mac OSX requirements
diff --git a/arch.arm.build.bash b/arch.arm.build.bash
index 2ad7cd4..49edbb4 100755
--- a/arch.arm.build.bash
+++ b/arch.arm.build.bash
@@ -4,5 +4,5 @@
 
 rm -f avr-toolchain-*.zip
 cd objdir
-zip -r -9 ../avr-toolchain-armv7l-gcc-4.3.2.zip .
+zip -r -9 ../avr-toolchain-armv7l-gcc-4.8.1.zip .
 
diff --git a/arch.linux32.build.bash b/arch.linux32.build.bash
index ec68ebe..9d1adb6 100755
--- a/arch.linux32.build.bash
+++ b/arch.linux32.build.bash
@@ -4,5 +4,5 @@ CC="gcc -m32" CXX="g++ -m32" ./build.all.bash
 
 rm -f avr-toolchain-*.zip
 cd objdir
-zip -r -9 ../avr-toolchain-linux32-gcc-4.3.2.zip .
+zip -r -9 ../avr-toolchain-linux32-gcc-4.8.1.zip .
 
diff --git a/arch.linux64.build.bash b/arch.linux64.build.bash
index 90d3669..ec80644 100755
--- a/arch.linux64.build.bash
+++ b/arch.linux64.build.bash
@@ -4,5 +4,5 @@
 
 rm -f avr-toolchain-*.zip
 cd objdir
-zip -r -9 ../avr-toolchain-linux64-gcc-4.3.2.zip .
+zip -r -9 ../avr-toolchain-linux64-gcc-4.8.1.zip .
 
diff --git a/arch.mac32.build.bash b/arch.mac32.build.bash
index 94374c2..4b3f1cd 100755
--- a/arch.mac32.build.bash
+++ b/arch.mac32.build.bash
@@ -6,5 +6,5 @@ CC="gcc -arch i386 -mmacosx-version-min=10.5" CXX="g++ -arch i386 -mmacosx-versi
 
 rm -f avr-toolchain-*.zip
 cd objdir
-zip -r -9 ../avr-toolchain-mac32-gcc-4.3.2.zip .
+zip -r -9 ../avr-toolchain-mac32-gcc-4.8.1.zip .
 
diff --git a/arch.win32.build.bash b/arch.win32.build.bash
index befb7d7..837e089 100755
--- a/arch.win32.build.bash
+++ b/arch.win32.build.bash
@@ -5,5 +5,5 @@ CFLAGS="-DWIN32" CXXFLAGS="-DWIN32" LDFLAGS="-DWIN32" CC="gcc -m32" CXX="g++ -m3
 
 rm -f avr-toolchain-*.zip
 cd objdir
-zip -r -9 ../avr-toolchain-win32-gcc-4.3.2.zip .
+zip -r -9 ../avr-toolchain-win32-gcc-4.8.1.zip .