diff --git a/toolchain/build-toolchain.sh b/toolchain/build-toolchain.sh
index 6f9ab38..14fa0ab 100755
--- a/toolchain/build-toolchain.sh
+++ b/toolchain/build-toolchain.sh
@@ -3,9 +3,8 @@
 apk --update add build-base
 apk add gmp-dev mpfr-dev mpc1-dev
 
-apk add make
 apk add grub-bios xorriso
-apk add gdb
+apk add gdb valgrind
 apk --update add qemu-system-x86_64 --repository http://dl-cdn.alpinelinux.org/alpine/v3.7/main
 
 rm -rf /var/cache/apk/*
@@ -41,7 +40,5 @@ mkdir gcc-build && cd gcc-build
 make all-gcc all-target-libgcc -j 4
 make install-gcc install-target-libgcc
 
-apk del build-base
-
 cd /
 rm -rf /opt