diff --git a/Formula/certbot.rb b/Formula/certbot.rb
index bf039bdea9..2a10d87bcf 100644
--- a/Formula/certbot.rb
+++ b/Formula/certbot.rb
@@ -5,7 +5,7 @@ class Certbot < Formula
   homepage "https://certbot.eff.org/"
   url "https://github.com/certbot/certbot/archive/v1.0.0.tar.gz"
   sha256 "cb853d4aeff1bd28c6a20bb4b26e782a791a28dfee5b6cf410ef2b6f4f580bd8"
-  revision 3
+  revision 4
   head "https://github.com/certbot/certbot.git"
 
   bottle do
@@ -18,7 +18,7 @@ class Certbot < Formula
   depends_on "augeas"
   depends_on "dialog"
   depends_on "openssl@1.1"
-  depends_on "python"
+  depends_on "python@3.8"
 
   resource "acme" do
     url "https://files.pythonhosted.org/packages/c7/57/8747646a4ae8fbde7460248b2489a68cf9161029009e55d305b36df40f21/acme-1.0.0.tar.gz"
@@ -41,8 +41,8 @@ class Certbot < Formula
   end
 
   resource "ConfigArgParse" do
-    url "https://files.pythonhosted.org/packages/ee/e2/d392af39dfe241e9fa5e9830ea1f00c077c7ae1dd6ede97cba06404c66fb/ConfigArgParse-0.15.2.tar.gz"
-    sha256 "558738aff623d6667aa5b85df6093ad3828867de8a82b66a6d458fb42567beb3"
+    url "https://files.pythonhosted.org/packages/66/37/dd9fcb3b19c1dceea450ee994952e311a96dd827bb09ee19169c3427e0d3/ConfigArgParse-1.0.tar.gz"
+    sha256 "bf378245bc9cdc403a527e5b7406b991680c2a530e7e81af747880b54eb57133"
   end
 
   resource "configobj" do
@@ -60,11 +60,6 @@ class Certbot < Formula
     sha256 "362dde65d846d23baee4b5c058c8586f219b5a54be1cf5fc6ff55c4578392f57"
   end
 
-  resource "future" do
-    url "https://files.pythonhosted.org/packages/45/0b/38b06fd9b92dc2b68d58b75f900e97884c45bedd2ff83203d933cf5851c9/future-0.18.2.tar.gz"
-    sha256 "b1bead90b70cf6ec3f0710ae53a525360fa360d306a86583adc6bf83a4db537d"
-  end
-
   resource "idna" do
     url "https://files.pythonhosted.org/packages/ad/13/eb56951b6f7950cadb579ca166e448ba77f9d24efc03edd7e55fa57d04b7/idna-2.8.tar.gz"
     sha256 "c357b3f628cf53ae2c4c05627ecc484553142ca23264e593d327bcde5e9c3407"
@@ -96,8 +91,8 @@ class Certbot < Formula
   end
 
   resource "pyparsing" do
-    url "https://files.pythonhosted.org/packages/00/32/8076fa13e832bb4dcff379f18f228e5a53412be0631808b9ca2610c0f566/pyparsing-2.4.5.tar.gz"
-    sha256 "4ca62001be367f01bd3e92ecbb79070272a9d4964dce6a48a82ff0b8bc7e683a"
+    url "https://files.pythonhosted.org/packages/a2/56/0404c03c83cfcca229071d3c921d7d79ed385060bbe969fde3fd8f774ebd/pyparsing-2.4.6.tar.gz"
+    sha256 "4c830582a84fb022400b85429791bc551f1f4871c33f23e44f353119e92f969f"
   end
 
   resource "pyRFC3339" do