diff --git a/README.md b/README.md
index 6d6b309..6434426 100644
--- a/README.md
+++ b/README.md
@@ -56,8 +56,9 @@ credentials +=
               "PASSWORD")
 EOF
 
-$ sbt core/publish
+$ sbt core/publishSigned
 ```
 
+Then in https://oss.sonatype.org/ go to 'Staging Repositories', sort by date descending, select the latest package, click 'Close'.
 
 ScalaWilliam <https://www.scalawilliam.com/>
diff --git a/project/gpg.sbt b/project/gpg.sbt
new file mode 100644
index 0000000..d092b4d
--- /dev/null
+++ b/project/gpg.sbt
@@ -0,0 +1 @@
+addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.0.0")
\ No newline at end of file