diff --git a/INSTALL.md b/INSTALL.md
index 3ca77da..8118e6a 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -16,10 +16,11 @@ building, and let me know.
 - PostgreSQL client library
 - ZLib
 - libssl
+- libpcre
 
 On Debian based distros, installation can be done like this:
 
-    $ sudo apt install libpq-dev zlib1g-dev libssl-dev
+    $ sudo apt install libpq-dev zlib1g-dev libssl-dev libpcre3-dev
 
 # (2) The Stack build tool