diff --git a/jwt_signed/callout/src/main/java/com/apigee/callout/jwtsigned/JwtCreatorCallout.java b/jwt_signed/callout/src/main/java/com/apigee/callout/jwtsigned/JwtCreatorCallout.java
index 6607fce..d308ec5 100644
--- a/jwt_signed/callout/src/main/java/com/apigee/callout/jwtsigned/JwtCreatorCallout.java
+++ b/jwt_signed/callout/src/main/java/com/apigee/callout/jwtsigned/JwtCreatorCallout.java
@@ -431,6 +431,7 @@ public ExecutionResult execute(MessageContext msgCtxt, ExecutionContext exeCtxt)
             if (AUDIENCE != null) claims.setAudience(java.util.Arrays.asList(AUDIENCE));
             if (JTI != null) claims.setJWTID(JTI);
             claims.setIssueTime(now);
+            claims.setNotBeforeTime(now);
             Date expiry = getExpiryDate(now,msgCtxt);
             if (expiry != null) { claims.setExpirationTime(expiry); }