diff --git a/lib/RevBank/Amount.pm b/lib/RevBank/Amount.pm
index c48d3de..2fd8f3a 100644
--- a/lib/RevBank/Amount.pm
+++ b/lib/RevBank/Amount.pm
@@ -1,8 +1,8 @@
 package RevBank::Amount;
 
-use v5.28;
+use v5.32;
 use warnings;
-use experimental 'isa';         # stable since v5.32
+use experimental 'isa';         # stable since v5.36
 use experimental 'signatures';  # stable since v5.36
 
 use Carp qw(carp croak);
diff --git a/lib/RevBank/Cart.pm b/lib/RevBank/Cart.pm
index f56cdde..a497191 100644
--- a/lib/RevBank/Cart.pm
+++ b/lib/RevBank/Cart.pm
@@ -1,6 +1,6 @@
 package RevBank::Cart;
 
-use v5.28;
+use v5.32;
 use warnings;
 use experimental 'signatures';  # stable since v5.36
 
diff --git a/lib/RevBank/Cart/Entry.pm b/lib/RevBank/Cart/Entry.pm
index ffac774..0bacd94 100644
--- a/lib/RevBank/Cart/Entry.pm
+++ b/lib/RevBank/Cart/Entry.pm
@@ -1,6 +1,6 @@
 package RevBank::Cart::Entry;
 
-use v5.28;
+use v5.32;
 use warnings;
 use experimental 'signatures';  # stable since v5.36
 
diff --git a/lib/RevBank/FileIO.pm b/lib/RevBank/FileIO.pm
index 5c11da4..5036d24 100644
--- a/lib/RevBank/FileIO.pm
+++ b/lib/RevBank/FileIO.pm
@@ -1,6 +1,6 @@
 package RevBank::FileIO;
 
-use v5.28;
+use v5.32;
 use warnings;
 use experimental 'signatures';  # stable since v5.36
 
diff --git a/lib/RevBank/Global.pm b/lib/RevBank/Global.pm
index 05439c8..a3ce975 100644
--- a/lib/RevBank/Global.pm
+++ b/lib/RevBank/Global.pm
@@ -1,6 +1,6 @@
 package RevBank::Global;
 
-use v5.28;
+use v5.32;
 use warnings;
 use experimental 'signatures';  # stable since v5.36
 
diff --git a/lib/RevBank/Messages.pm b/lib/RevBank/Messages.pm
index 38b59d8..254b35e 100644
--- a/lib/RevBank/Messages.pm
+++ b/lib/RevBank/Messages.pm
@@ -1,6 +1,6 @@
 package RevBank::Messages;
 
-use v5.28;
+use v5.32;
 use warnings;
 use experimental 'signatures';  # stable since v5.36
 
diff --git a/lib/RevBank/Plugin.pm b/lib/RevBank/Plugin.pm
index a7e7c05..a077516 100644
--- a/lib/RevBank/Plugin.pm
+++ b/lib/RevBank/Plugin.pm
@@ -1,6 +1,6 @@
 package RevBank::Plugin;
 
-use v5.28;
+use v5.32;
 use warnings;
 use experimental 'signatures';  # stable since v5.36
 use attributes;
diff --git a/lib/RevBank/Plugins.pm b/lib/RevBank/Plugins.pm
index 3d288af..472f40a 100644
--- a/lib/RevBank/Plugins.pm
+++ b/lib/RevBank/Plugins.pm
@@ -1,6 +1,6 @@
 package RevBank::Plugins;
 
-use v5.28;
+use v5.32;
 use warnings;
 use experimental 'signatures';  # stable since v5.36
 
diff --git a/lib/RevBank/TextEditor.pm b/lib/RevBank/TextEditor.pm
index 5429ecd..4213b31 100644
--- a/lib/RevBank/TextEditor.pm
+++ b/lib/RevBank/TextEditor.pm
@@ -1,6 +1,6 @@
 package RevBank::TextEditor;
 
-use v5.28;
+use v5.32;
 use warnings;
 use experimental 'signatures';  # stable since v5.36
 
diff --git a/lib/RevBank/Users.pm b/lib/RevBank/Users.pm
index fad29b6..b0d0d09 100644
--- a/lib/RevBank/Users.pm
+++ b/lib/RevBank/Users.pm
@@ -1,6 +1,6 @@
 package RevBank::Users;
 
-use v5.28;
+use v5.32;
 use warnings;
 use experimental 'signatures';  # stable since v5.36
 
diff --git a/revbank b/revbank
index 2462928..ca23a1c 100755
--- a/revbank
+++ b/revbank
@@ -1,6 +1,6 @@
 #!/usr/bin/env perl
 
-use v5.28;
+use v5.32;
 use warnings;
 use feature qw(signatures);
 no warnings "experimental::signatures";
diff --git a/t/amount.t b/t/amount.t
index 95d15c1..9318e8e 100644
--- a/t/amount.t
+++ b/t/amount.t
@@ -1,4 +1,4 @@
-use v5.28;
+use v5.32;
 use warnings;
 
 use Test::More;