diff --git a/Dockerfile b/Dockerfile
index 423eca5..4a7dad4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@
 #
 # You can specify a version:
 # FROM node:10-slim
-FROM node:14.14-slim
+FROM node:15.12.0-slim
 
 # Labels for GitHub to read your action
 LABEL "com.github.actions.name"="Automated version bump for npm packages."