diff --git a/Dockerfile b/Dockerfile
index bd3b552608..d69eac192b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@
 #
 # Nothing fancy here: we copy in the source code and build on the Alpine Go
 # image. Refer to .dockerignore to get a sense of what we're not going to copy.
-FROM golang:1.15-alpine@sha256:276ef0253160fc2fd0fc7a78cc66c8bfe3260628946e447517e207b88e48e71d as builder
+FROM golang:1.15-alpine@sha256:86a9ac87a3317d2635b817493a9df24ad6fff38b8bcee4a72ce511305b897646 as builder
 
 COPY . /src
 WORKDIR /src