diff --git a/Dockerfile b/Dockerfile
index 9b7e3c7..1e21080 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.17.6-buster
+FROM golang:1.20.0-buster
 ADD . /gh-action-detect-unmergeable/
 WORKDIR /gh-action-detect-unmergeable/
 RUN ["make", "build", "-j"]