diff --git a/index.js b/index.js
index ad4ca00..dcaa454 100644
--- a/index.js
+++ b/index.js
@@ -92,6 +92,10 @@ function supportsColor(haveStream, streamIsTTY) {
 		return /^(9\.(0*[1-9]\d*)\.|\d{2,}\.)/.test(env.TEAMCITY_VERSION) ? 1 : 0;
 	}
 
+	if ('GITHUB_ACTIONS' in env) {
+		return 1;
+	}
+
 	if (env.COLORTERM === 'truecolor') {
 		return 3;
 	}