diff --git a/README.md b/README.md
index ec3b0f2..9a6eea1 100644
--- a/README.md
+++ b/README.md
@@ -173,6 +173,7 @@ openssl ca \
   -startdate $(date +%y%m%d%H%M%SZ --date="today")  \  # use the current date
   -enddate $(date +%y%m%d%H%M%SZ --date="today + 5 years 0:00")  # use 5 years later
   -out class3.crt.pem                \  # output class3 certificate
+  2>&1 | tee -a class3-signing-$(date +%Y%m%d).log
 ```
 
 ## Post-signing changes on the signer