diff --git a/Changes b/Changes
index 7ec8761..2b02686 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,12 @@ Revision history for Array-Sparse
 
 {{$NEXT}}
 
+0.0.9  2023-12-21T11:39:14+01:00
+    - Up dependency on Array::Agnostic
+    - Use .rakutest extension for tests
+    - Add sponsor link
+    - Update copyright year
+
 0.0.8  2021-09-10T10:38:21+02:00
     - Change file extension to .rakumod
     - Migrate to zef ecosystem
diff --git a/META6.json b/META6.json
index 51b3c22..a06df34 100644
--- a/META6.json
+++ b/META6.json
@@ -6,7 +6,7 @@
   "build-depends": [
   ],
   "depends": [
-    "Array::Agnostic:ver<0.0.10>:auth<zef:lizmat>"
+    "Array::Agnostic:ver<0.0.11>:auth<zef:lizmat>"
   ],
   "description": "role for sparsely populated Arrays",
   "license": "Artistic-2.0",
@@ -23,5 +23,5 @@
   ],
   "test-depends": [
   ],
-  "version": "0.0.8"
+  "version": "0.0.9"
 }
diff --git a/README.md b/README.md
index e35f28b..91b9864 100644
--- a/README.md
+++ b/README.md
@@ -33,10 +33,12 @@ Elizabeth Mattijsen <liz@raku.rocks>
 
 Source can be located at: https://github.com/lizmat/Array-Sparse . Comments and Pull Requests are welcome.
 
+If you like this module, or what I’m doing more generally, committing to a [small sponsorship](https://github.com/sponsors/lizmat/) would mean a great deal to me!
+
 COPYRIGHT AND LICENSE
 =====================
 
-Copyright 2018, 2020, 2021 Elizabeth Mattijsen
+Copyright 2018, 2020, 2021, 2023 Elizabeth Mattijsen
 
 This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.
 
diff --git a/lib/Array/Sparse.rakumod b/lib/Array/Sparse.rakumod
index 67ae82f..5931ed1 100644
--- a/lib/Array/Sparse.rakumod
+++ b/lib/Array/Sparse.rakumod
@@ -1,10 +1,8 @@
 use v6.d;
 
-use Array::Agnostic:ver<0.0.10>:auth<zef:lizmat>;
+use Array::Agnostic:ver<0.0.11>:auth<zef:lizmat>;
 
-role Array::Sparse:ver<0.0.8>:auth<zef:lizmat>
-  does Array::Agnostic
-{
+role Array::Sparse does Array::Agnostic {
     has %!sparse;
     has $.end = -1;
 
@@ -180,9 +178,13 @@ Elizabeth Mattijsen <liz@raku.rocks>
 Source can be located at: https://github.com/lizmat/Array-Sparse .
 Comments and Pull Requests are welcome.
 
+If you like this module, or what I’m doing more generally, committing to a
+L<small sponsorship|https://github.com/sponsors/lizmat/>  would mean a great
+deal to me!
+
 =head1 COPYRIGHT AND LICENSE
 
-Copyright 2018, 2020, 2021 Elizabeth Mattijsen
+Copyright 2018, 2020, 2021, 2023 Elizabeth Mattijsen
 
 This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.
 
diff --git a/t/01-basic.t b/t/01-basic.rakutest
similarity index 96%
rename from t/01-basic.t
rename to t/01-basic.rakutest
index cbc626c..31622ba 100644
--- a/t/01-basic.t
+++ b/t/01-basic.rakutest
@@ -34,12 +34,15 @@ subtest {
 }, 'checking [* - x]';
 
 subtest {
-    plan 5;
+    plan 8;
     ok @a[9]:exists, 'does last element exist';
     is @a[9]:delete, 10, 'does :delete work on last element';
     nok @a[9]:exists, 'does last element no longer exist';
-    is @a.elems, 9, 'do we have one element less now: elems';
-    is @a.end,   8, 'do we have one element less now: end';
+    is-deeply @a.elems, 9, 'do we have one element less now: elems';
+    is-deeply @a.end,   8, 'do we have one element less now: end';
+    is-deeply +@a, 9, 'does it numerify ok';
+    is-deeply @a.Int, 9, 'does it intify ok';
+    is-deeply ?@a, True, 'does it boolify ok';
 }, 'deletion of last element';
 
 subtest {