diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/HMACSHA1NonceGenerator.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/HMACSHA1NonceGenerator.java
index 1e8da20b0..c24784771 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/HMACSHA1NonceGenerator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/HMACSHA1NonceGenerator.java
@@ -56,6 +56,8 @@
 
 /**
  * The nonce generator which was first introduced to git-core.
+ *
+ * @since 4.0
  */
 public class HMACSHA1NonceGenerator implements NonceGenerator {
 
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/NonceGenerator.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/NonceGenerator.java
index 3afacd718..d1ea08906 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/NonceGenerator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/NonceGenerator.java
@@ -49,6 +49,8 @@
  * A NonceGenerator is used to create a nonce to be sent out to the pusher who
  * will sign the nonce to prove it is not a replay attack on the push
  * certificate.
+ *
+ * @since 4.0
  */
 public interface NonceGenerator {