Adds GPIO effect and dummy blinker service

1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index dd065da..c1bbe25 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ to build pipelines modularly and stream data within pipeline elements. E.g.
 Install [`stack`](https://docs.haskellstack.org/en/stable/). I recommend using
 [`ghcup`](https://www.haskell.org/ghcup/) for this. Run `stack build` to
 compile all libraries and executables. Note: you might need to install some
-system dependencies on your host first (e.g. `libzmq`, etc.)
+system dependencies on your host first (e.g. `libzmq`, `libgpiod`, etc.)
 
 ## Test
 On one terminal, run `stack exec dummy-receiver`. This will initialize a ZMQ