diff --git a/build_x86.sh b/build_x86.sh
index dd1f5e2..c1585a0 100755
--- a/build_x86.sh
+++ b/build_x86.sh
@@ -1,5 +1,6 @@
 #!/bin/sh
-sudo apt-get install -y libpam0g-dev libssl-dev zlib1g-dev
+sudo apt-get install -y libpam0g-dev libssl-dev zlib1g-dev \
+                        autoconf-archive autoconf
 mkdir -p build
 cd build
 cmake ..