diff --git a/Cargo.toml b/Cargo.toml
index 7d73488..994b0fc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2018"
 
 
 [features]
-build-binary = ["v4l"] 
+build-binary = ["v4l", "nannou"] 
 
 [[bin]]
 name = "visual_haarcascades"
@@ -23,7 +23,7 @@ path = "src/lib.rs"
 crate-type = ["dylib"]
 
 [dependencies]
-nannou = "0.14"
+nannou = {version = "0.14", optional = true}
 # clang-sys = "0.29.3"
 v4l = {version = "0.5.1", features = ["libv4l"],  optional = true}
 image = "0.23"