diff --git a/BUILDING.md b/BUILDING.md
index 7b01f2c3..5ab95a3b 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -27,6 +27,7 @@ Note that on Linux systems it might be necessary to additionally install the fol
 sudo apt-get install \
     libxtst-dev \
     libxss-dev \
+    libprocps-dev \
     libopencv-dev
 ```
 
diff --git a/README.md b/README.md
index 8f7ec108..16d745bc 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,7 @@ If `apt` is supported on your system they can be installed using:
 sudo apt-get install \
     libxtst-dev \
     libxss-dev \
+    libprocps-dev \
     libopencv-dev
 ```