diff --git a/COMPILE.txt b/COMPILE.txt
index a179f0f81..ce9513e80 100644
--- a/COMPILE.txt
+++ b/COMPILE.txt
@@ -24,7 +24,7 @@ Requirements:
 - ...did I forget something?
 
 On Ubuntu/Debian the requirements can be installed by running:
-sudo apt-get install build-essential cmake libgtk2.0-dev libgtkmm-2.4-dev libtiff-dev libpng-dev libjpeg-dev liblcms-dev libiptcdata-dev subversion
+sudo apt-get install build-essential cmake libgtk2.0-dev libgtkmm-2.4-dev libtiff-dev libpng-dev libjpeg-dev liblcms-dev libiptcdata-dev merciurial
 
 Compile:
 - Enter the root directory of the RawTherapee source tree
@@ -41,11 +41,11 @@ OSX
 ---
 
 Requirements:
+- XCode Development Tools (you only need a subset of these, but it is probably easier to just install all of them)
 - MacPorts
   - Set /opt/local/etc/macports/variants.conf to include "+universal +no_x11 +quartz"  (NOTE: as of this writing the Pango and Pango-devel ports are broken and will not build as Universal variants.  Until this is fixed, leave the universal flag off.)
   - Set /opt/local/etc/macports/macports.conf key 'universal_archs' to "i386 x86_64"
-  - Run "sudo port install cairomm pango-devel gtk2 cmake glibmm gtkmm lcms libiptcdata" to install all needed libraries
-- XCode Development Tools (you only need a subset of these, but it is probably easier to just install all of them)
+  - Run "sudo port install cairomm pango-devel gtk2 cmake glibmm gtkmm lcms libiptcdata mercurial" to install all needed libraries and tools
 
 Compile:
 - Enter root directory of RawTherapee source tree