diff --git a/Gemfile b/Gemfile
index 5af72e4..ba0246c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -20,7 +20,7 @@ group :development do
 end
 
 group :development, :test do
-  gem 'simplecov', '~> 0.21',  platforms: :mri
+  gem 'simplecov', '~> 0.22',  platforms: :mri
   gem 'simplecov-lcov', '~> 0.8',  platforms: :mri
 end
 
diff --git a/README.md b/README.md
index fe58590..8efecd8 100644
--- a/README.md
+++ b/README.md
@@ -217,8 +217,8 @@ Blank nodes associated with rdf:List statements used as part of a built-in are m
 * [Ruby](https://ruby-lang.org/) (>= 3.0)
 * [RDF.rb](https://rubygems.org/gems/rdf) (~> 3.3)
 * [EBNF][EBNF gem] (~> 2.4)
-* [SPARQL][SPARQL gem] (~> 3.1)
-* [SXP][SXP gem] (~> 1.2)
+* [SPARQL][SPARQL gem] (~> 3.3)
+* [SXP][SXP gem] (~> 1.3)
 
 ## Documentation
 Full documentation available on [RubyDoc.info](https://ruby-rdf.github.io/rdf-n3)