diff --git a/certbot-apache/local-oldest-requirements.txt b/certbot-apache/local-oldest-requirements.txt
new file mode 100644
index 000000000..ce8078719
--- /dev/null
+++ b/certbot-apache/local-oldest-requirements.txt
@@ -0,0 +1,2 @@
+acme==0.21.1
+certbot==0.21.1
diff --git a/certbot-dns-cloudflare/local-oldest-requirements.txt b/certbot-dns-cloudflare/local-oldest-requirements.txt
new file mode 100644
index 000000000..ce8078719
--- /dev/null
+++ b/certbot-dns-cloudflare/local-oldest-requirements.txt
@@ -0,0 +1,2 @@
+acme==0.21.1
+certbot==0.21.1
diff --git a/certbot-dns-cloudxns/local-oldest-requirements.txt b/certbot-dns-cloudxns/local-oldest-requirements.txt
new file mode 100644
index 000000000..ce8078719
--- /dev/null
+++ b/certbot-dns-cloudxns/local-oldest-requirements.txt
@@ -0,0 +1,2 @@
+acme==0.21.1
+certbot==0.21.1
diff --git a/certbot-dns-digitalocean/local-oldest-requirements.txt b/certbot-dns-digitalocean/local-oldest-requirements.txt
new file mode 100644
index 000000000..ce8078719
--- /dev/null
+++ b/certbot-dns-digitalocean/local-oldest-requirements.txt
@@ -0,0 +1,2 @@
+acme==0.21.1
+certbot==0.21.1
diff --git a/certbot-dns-dnsimple/local-oldest-requirements.txt b/certbot-dns-dnsimple/local-oldest-requirements.txt
new file mode 100644
index 000000000..ce8078719
--- /dev/null
+++ b/certbot-dns-dnsimple/local-oldest-requirements.txt
@@ -0,0 +1,2 @@
+acme==0.21.1
+certbot==0.21.1
diff --git a/certbot-dns-dnsmadeeasy/local-oldest-requirements.txt b/certbot-dns-dnsmadeeasy/local-oldest-requirements.txt
new file mode 100644
index 000000000..ce8078719
--- /dev/null
+++ b/certbot-dns-dnsmadeeasy/local-oldest-requirements.txt
@@ -0,0 +1,2 @@
+acme==0.21.1
+certbot==0.21.1
diff --git a/certbot-dns-google/local-oldest-requirements.txt b/certbot-dns-google/local-oldest-requirements.txt
new file mode 100644
index 000000000..ce8078719
--- /dev/null
+++ b/certbot-dns-google/local-oldest-requirements.txt
@@ -0,0 +1,2 @@
+acme==0.21.1
+certbot==0.21.1
diff --git a/certbot-dns-luadns/local-oldest-requirements.txt b/certbot-dns-luadns/local-oldest-requirements.txt
new file mode 100644
index 000000000..ce8078719
--- /dev/null
+++ b/certbot-dns-luadns/local-oldest-requirements.txt
@@ -0,0 +1,2 @@
+acme==0.21.1
+certbot==0.21.1
diff --git a/certbot-dns-nsone/local-oldest-requirements.txt b/certbot-dns-nsone/local-oldest-requirements.txt
new file mode 100644
index 000000000..ce8078719
--- /dev/null
+++ b/certbot-dns-nsone/local-oldest-requirements.txt
@@ -0,0 +1,2 @@
+acme==0.21.1
+certbot==0.21.1
diff --git a/certbot-dns-rfc2136/local-oldest-requirements.txt b/certbot-dns-rfc2136/local-oldest-requirements.txt
new file mode 100644
index 000000000..ce8078719
--- /dev/null
+++ b/certbot-dns-rfc2136/local-oldest-requirements.txt
@@ -0,0 +1,2 @@
+acme==0.21.1
+certbot==0.21.1
diff --git a/certbot-dns-route53/local-oldest-requirements.txt b/certbot-dns-route53/local-oldest-requirements.txt
new file mode 100644
index 000000000..ce8078719
--- /dev/null
+++ b/certbot-dns-route53/local-oldest-requirements.txt
@@ -0,0 +1,2 @@
+acme==0.21.1
+certbot==0.21.1
diff --git a/certbot-nginx/local-oldest-requirements.txt b/certbot-nginx/local-oldest-requirements.txt
new file mode 100644
index 000000000..049c064f4
--- /dev/null
+++ b/certbot-nginx/local-oldest-requirements.txt
@@ -0,0 +1,2 @@
+acme/
+.
diff --git a/local-oldest-requirements.txt b/local-oldest-requirements.txt
new file mode 100644
index 000000000..450cbdab3
--- /dev/null
+++ b/local-oldest-requirements.txt
@@ -0,0 +1 @@
+acme/