diff --git a/README.md b/README.md
index e783209..21d3876 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,9 @@ nostril - generate nostr events
 *--created-at* <unix timestamp>
 	Set the created at. Optional, this is set automatically.
 
+*--sec* <hex seckey>
+	Set the secret key for signing, otherwise one will be randomly generated.
+
 *--mine-pubkey*
 	Mine a pubkey. This may or may not be cryptographically dubious.
 
diff --git a/doc/INSTALL.txt b/doc/INSTALL.txt
index d506d79..5b2d67e 100644
--- a/doc/INSTALL.txt
+++ b/doc/INSTALL.txt
@@ -7,3 +7,15 @@ $ make
 # Optional - install to system PATH
 
 $ sudo make install
+
+######################
+
+Ubuntu
+------
+
+$ sudo apt install libtool make automake
+$ make
+
+# Optional - install to system PATH
+
+$ sudo make install
diff --git a/doc/nostril.1 b/doc/nostril.1
index 550f0cd..9d69e8b 100644
--- a/doc/nostril.1
+++ b/doc/nostril.1
@@ -47,6 +47,11 @@ Set the kind of the note
 Set the created at.\& Optional, this is set automatically.\&
 .P
 .RE
+\fB--sec\fR <hex seckey>
+.RS 4
+Set the secret key for signing, otherwise one will be randomly generated.\&
+.P
+.RE
 \fB--mine-pubkey\fR
 .RS 4
 Mine a pubkey.\& This may or may not be cryptographically dubious.\&