diff --git a/bindep.txt b/bindep.txt
new file mode 100644
index 00000000..3991ef06
--- /dev/null
+++ b/bindep.txt
@@ -0,0 +1,2 @@
+librsvg2-tools [doc platform:rpm]
+librsvg2-bin [doc platform:dpkg]
diff --git a/tox.ini b/tox.ini
index 2735b976..e711dd9e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 minversion = 2.0
 skipsdist = True
-envlist = docs,pep8
+envlist = docs,pep8,bindep
 
 [testenv]
 usedevelop = True
@@ -52,3 +52,15 @@ basepython = python3
 deps = {[testenv:docs]deps}
 
 commands = sphinx-build -a -E -W -d deploy-guide/build/doctrees -b html deploy-guide/source deploy-guide/build/html
+
+[testenv:bindep]
+# Do not install any requirements. We want this to be fast and work even if
+# system dependencies are missing, since it's used to tell you what system
+# dependencies are missing! This also means that bindep must be installed
+# separately, outside of the requirements files, and develop mode disabled
+# explicitly to avoid unnecessarily installing the checked-out repo too (this
+# further relies on "tox.skipsdist = True" above).
+usedevelop = False
+deps = bindep
+commands =
+  bindep test