diff --git a/Gemfile b/Gemfile
index 04399a9c..e6c6d70d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ gemspec
 # your gem to rubygems.org.
 
 gem "byebug"
-gem "appraisal"
+gem "appraisal", github: "thoughtbot/appraisal"
 gem "overcommit"
 gem "standard"
 gem "mocha"
diff --git a/Gemfile.lock b/Gemfile.lock
index d1f3d7d0..b332e25b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,6 +7,15 @@ GIT
       pdf-core (~> 0.9.0)
       ttfunk (~> 1.7)
 
+GIT
+  remote: https://github.com/thoughtbot/appraisal.git
+  revision: b200e636903700098bef25f4f51dbc4c46e4c04c
+  specs:
+    appraisal (2.4.1)
+      bundler
+      rake
+      thor (>= 0.14.0)
+
 PATH
   remote: .
   specs:
@@ -83,10 +92,6 @@ GEM
       tzinfo (~> 2.0)
     addressable (2.8.4)
       public_suffix (>= 2.0.2, < 6.0)
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
     ast (2.4.2)
     bindex (0.8.1)
     braintree (4.11.0)
@@ -269,7 +274,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  appraisal
+  appraisal!
   braintree (>= 2.92.0)
   byebug
   importmap-rails
diff --git a/gemfiles/rails_6.gemfile b/gemfiles/rails_6.gemfile
index 707cff39..2ab7563e 100644
--- a/gemfiles/rails_6.gemfile
+++ b/gemfiles/rails_6.gemfile
@@ -3,7 +3,7 @@
 source "https://rubygems.org"
 
 gem "byebug"
-gem "appraisal"
+gem "appraisal", git: "https://github.com/thoughtbot/appraisal.git"
 gem "overcommit"
 gem "standard"
 gem "mocha"
diff --git a/gemfiles/rails_6.gemfile.lock b/gemfiles/rails_6.gemfile.lock
index ab124391..b4706c44 100644
--- a/gemfiles/rails_6.gemfile.lock
+++ b/gemfiles/rails_6.gemfile.lock
@@ -7,10 +7,19 @@ GIT
       pdf-core (~> 0.9.0)
       ttfunk (~> 1.7)
 
+GIT
+  remote: https://github.com/thoughtbot/appraisal.git
+  revision: b200e636903700098bef25f4f51dbc4c46e4c04c
+  specs:
+    appraisal (2.4.1)
+      bundler
+      rake
+      thor (>= 0.14.0)
+
 PATH
   remote: ..
   specs:
-    pay (6.4.0)
+    pay (6.5.0)
       rails (>= 6.0.0)
 
 GEM
@@ -73,10 +82,6 @@ GEM
       zeitwerk (~> 2.2, >= 2.2.2)
     addressable (2.8.4)
       public_suffix (>= 2.0.2, < 6.0)
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
     ast (2.4.2)
     bindex (0.8.1)
     braintree (4.11.0)
@@ -260,7 +265,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  appraisal
+  appraisal!
   braintree (>= 2.92.0)
   byebug
   importmap-rails
diff --git a/gemfiles/rails_6_1.gemfile b/gemfiles/rails_6_1.gemfile
index 0ddd8845..c1433843 100644
--- a/gemfiles/rails_6_1.gemfile
+++ b/gemfiles/rails_6_1.gemfile
@@ -3,7 +3,7 @@
 source "https://rubygems.org"
 
 gem "byebug"
-gem "appraisal"
+gem "appraisal", git: "https://github.com/thoughtbot/appraisal.git"
 gem "overcommit"
 gem "standard"
 gem "mocha"
diff --git a/gemfiles/rails_6_1.gemfile.lock b/gemfiles/rails_6_1.gemfile.lock
index 1e686cf7..68dd78b6 100644
--- a/gemfiles/rails_6_1.gemfile.lock
+++ b/gemfiles/rails_6_1.gemfile.lock
@@ -7,10 +7,19 @@ GIT
       pdf-core (~> 0.9.0)
       ttfunk (~> 1.7)
 
+GIT
+  remote: https://github.com/thoughtbot/appraisal.git
+  revision: b200e636903700098bef25f4f51dbc4c46e4c04c
+  specs:
+    appraisal (2.4.1)
+      bundler
+      rake
+      thor (>= 0.14.0)
+
 PATH
   remote: ..
   specs:
-    pay (6.4.0)
+    pay (6.5.0)
       rails (>= 6.0.0)
 
 GEM
@@ -77,10 +86,6 @@ GEM
       zeitwerk (~> 2.3)
     addressable (2.8.4)
       public_suffix (>= 2.0.2, < 6.0)
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
     ast (2.4.2)
     bindex (0.8.1)
     braintree (4.11.0)
@@ -263,7 +268,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  appraisal
+  appraisal!
   braintree (>= 2.92.0)
   byebug
   importmap-rails
diff --git a/gemfiles/rails_7.gemfile b/gemfiles/rails_7.gemfile
index 97127f17..1974c0a7 100644
--- a/gemfiles/rails_7.gemfile
+++ b/gemfiles/rails_7.gemfile
@@ -3,7 +3,7 @@
 source "https://rubygems.org"
 
 gem "byebug"
-gem "appraisal"
+gem "appraisal", git: "https://github.com/thoughtbot/appraisal.git"
 gem "overcommit"
 gem "standard"
 gem "mocha"
diff --git a/gemfiles/rails_7.gemfile.lock b/gemfiles/rails_7.gemfile.lock
index d9941c2d..bc272b44 100644
--- a/gemfiles/rails_7.gemfile.lock
+++ b/gemfiles/rails_7.gemfile.lock
@@ -7,10 +7,19 @@ GIT
       pdf-core (~> 0.9.0)
       ttfunk (~> 1.7)
 
+GIT
+  remote: https://github.com/thoughtbot/appraisal.git
+  revision: b200e636903700098bef25f4f51dbc4c46e4c04c
+  specs:
+    appraisal (2.4.1)
+      bundler
+      rake
+      thor (>= 0.14.0)
+
 PATH
   remote: ..
   specs:
-    pay (6.4.0)
+    pay (6.5.0)
       rails (>= 6.0.0)
 
 GEM
@@ -83,10 +92,6 @@ GEM
       tzinfo (~> 2.0)
     addressable (2.8.4)
       public_suffix (>= 2.0.2, < 6.0)
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
     ast (2.4.2)
     bindex (0.8.1)
     braintree (4.11.0)
@@ -269,7 +274,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  appraisal
+  appraisal!
   braintree (>= 2.92.0)
   byebug
   importmap-rails
diff --git a/gemfiles/rails_main.gemfile b/gemfiles/rails_main.gemfile
index 42aa6c0a..1ef57d82 100644
--- a/gemfiles/rails_main.gemfile
+++ b/gemfiles/rails_main.gemfile
@@ -3,7 +3,7 @@
 source "https://rubygems.org"
 
 gem "byebug"
-gem "appraisal"
+gem "appraisal", git: "https://github.com/thoughtbot/appraisal.git"
 gem "overcommit"
 gem "standard"
 gem "mocha"
diff --git a/gemfiles/rails_main.gemfile.lock b/gemfiles/rails_main.gemfile.lock
index 4c92a984..13d7432d 100644
--- a/gemfiles/rails_main.gemfile.lock
+++ b/gemfiles/rails_main.gemfile.lock
@@ -104,10 +104,19 @@ GIT
       thor (~> 1.0)
       zeitwerk (~> 2.6)
 
+GIT
+  remote: https://github.com/thoughtbot/appraisal.git
+  revision: b200e636903700098bef25f4f51dbc4c46e4c04c
+  specs:
+    appraisal (2.4.1)
+      bundler
+      rake
+      thor (>= 0.14.0)
+
 PATH
   remote: ..
   specs:
-    pay (6.4.0)
+    pay (6.5.0)
       rails (>= 6.0.0)
 
 GEM
@@ -115,10 +124,6 @@ GEM
   specs:
     addressable (2.8.4)
       public_suffix (>= 2.0.2, < 6.0)
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
     ast (2.4.2)
     bindex (0.8.1)
     braintree (4.11.0)
@@ -291,7 +296,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  appraisal
+  appraisal!
   braintree (>= 2.92.0)
   byebug
   importmap-rails