diff --git a/index.js b/index.js
index dd33879..d0d008a 100644
--- a/index.js
+++ b/index.js
@@ -88,6 +88,10 @@ function supportsColor(stream) {
 		return /^(9\.(0*[1-9]\d*)\.|\d{2,}\.)/.test(env.TEAMCITY_VERSION) ? 1 : 0;
 	}
 
+	if (env.COLORTERM === 'truecolor') {
+		return 3;
+	}
+
 	if ('TERM_PROGRAM' in env) {
 		const version = parseInt((env.TERM_PROGRAM_VERSION || '').split('.')[0], 10);