diff --git a/README.md b/README.md
index be55f7c70e22b74d90251dcdc2eabed2dd930e23..1ae5af9280fc86362f66c5693e5d977308f311cc 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,7 @@ environment as well as the following tools:
 
   * GNU `make`
   * `inkscape`
+  * `pdftops`
 
 Aside from these tools, the installation requires a correctly
 configured TeX distribution containing the pdfTeX and XeTeX engines