diff --git a/README.md b/README.md
index 40ee9ef..26aeb72 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ See manpage calcelestial(1) and the [blog entry](https://www.noteblok.net/2012/1
 ### Linux
 
 ```
-sudo apt-get install -y libnova-dev libcurl4-openssl-dev libjson-c-dev libdb-dev
+sudo apt-get install -y libnova-dev libcurl4-openssl-dev libjson-c-dev libdb-dev autoconf
 autoreconf -i && ./configure && make install
 ````
 ### macOS
@@ -26,4 +26,4 @@ calcelestial is licensed under [GPLv3](https://www.gnu.org/licenses/gpl-3.0.html
 
 # Author
 
-calcelestial is written by Steffen Vogel <post@steffenvogel.de>
\ No newline at end of file
+calcelestial is written by Steffen Vogel <post@steffenvogel.de>