diff --git a/lib/manager/gomod/artifacts.ts b/lib/manager/gomod/artifacts.ts
index 2d35392c22924407b7802efb56d9de92d9f8c727..25a8b5415c7af1541d3f159c3caa2265a995e25d 100644
--- a/lib/manager/gomod/artifacts.ts
+++ b/lib/manager/gomod/artifacts.ts
@@ -128,6 +128,7 @@ export async function updateArtifacts({
         GOPRIVATE: process.env.GOPRIVATE,
         GONOPROXY: process.env.GONOPROXY,
         GONOSUMDB: process.env.GONOSUMDB,
+        GOSUMDB: process.env.GOSUMDB,
         GOFLAGS: useModcacherw(config.constraints?.go) ? '-modcacherw' : null,
         CGO_ENABLED: getGlobalConfig().binarySource === 'docker' ? '0' : null,
         ...getGitEnvironmentVariables(),