diff --git a/README.md b/README.md
index 04f0ba96..180bc48b 100644
--- a/README.md
+++ b/README.md
@@ -92,6 +92,7 @@ A compiler with C++14 support ([clang-3.4+](http://llvm.org/releases/download.ht
 
 **Optional dependencies for extended module support:**
 - alsa-lib *required by `internal/volume`*
+- libpulse *required by `internal/pulseaudio`*
 - jsoncpp *required by `internal/i3`*
 - libmpdclient *required by `internal/mpd`*
 - libcurl *required by `internal/github`*
diff --git a/contrib/polybar-git.aur/PKGBUILD b/contrib/polybar-git.aur/PKGBUILD
index 161834a7..6d2b47ba 100644
--- a/contrib/polybar-git.aur/PKGBUILD
+++ b/contrib/polybar-git.aur/PKGBUILD
@@ -10,6 +10,7 @@ url="https://github.com/jaagr/polybar"
 license=("MIT")
 depends=("cairo" "xcb-util-image" "xcb-util-wm" "xcb-util-xrm" "xcb-util-cursor")
 optdepends=("alsa-lib: volume module support"
+            "libpulse: pulseaudio module support"
             "libmpdclient: mpd module support"
             "wireless_tools: network module support"
             "jsoncpp: i3 module support"