diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..def4cc9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.venv/
+
diff --git a/README.md b/README.md
index 0a3e0a4..18e6fcb 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,14 @@ Will encrypt all incoming mail with the `pid1@revsuine.xyz` PGP key.
 TODO link my blog post when I make it fully explaining how to use as Sieve
 filter.
 
+I use this script on my own mail server so this should be maintained to work
+with the up-to-date versions of Python and python-gnupg
+
+# Requirements
+
+* Python 3
+* [python-gnupg](https://gnupg.readthedocs.io/en/latest/)
+
 # Credits
 
 * Julian Klode for the [original code](https://github.com/julian-klode/ansible.jak-linux.org/blob/dovecot/roles/mailserver/files/usr/local/lib/dovecot-sieve-filters/gpgmymail)
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..1a049b0
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+python-gnupg
+