diff --git a/.pkgr.yml b/.pkgr.yml
index d2e8486b02..b1ec803f3e 100644
--- a/.pkgr.yml
+++ b/.pkgr.yml
@@ -33,4 +33,4 @@ before:
 after:
   - mv bin/gogs gogs
 after_install: ./.packager/hooks/postinst
-buildpack: https://github.com/heroku/heroku-buildpack-go.git
+buildpack: https://github.com/heroku/heroku-buildpack-go.git#main
diff --git a/go.mod b/go.mod
index 133962592d..5e30796b8a 100644
--- a/go.mod
+++ b/go.mod
@@ -71,5 +71,5 @@ require (
 	xorm.io/xorm v0.8.0
 )
 
-// +heroku goVersion go1.14
+// +heroku goVersion go1.15
 // +heroku install ./