diff --git a/Dockerfile b/Dockerfile
index 16a553b749b2a6d5a49f117dd15485c1eb1ad56b..5ddc42deb756e62efae7e560393f36b8d5318f22 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ RUN npm install && ./node_modules/.bin/webpack
 
 # Debian bullseye can't build gostatic due to its strict dependency
 # on Go 1.16, so we build it separately.
-FROM golang:1.16 AS gobuild
+FROM golang:1.17 AS gobuild
 RUN go get github.com/piranha/gostatic
 RUN go get git.autistici.org/ai/webtools/cmd/sitesearch
 RUN go get git.autistici.org/ai/webtools/cmd/jsonsubst