diff --git a/ruby_event_store-browser/lib/ruby_event_store/browser/gem_source.rb b/ruby_event_store-browser/lib/ruby_event_store/browser/gem_source.rb
index ca05a29e9e..d6177be34f 100644
--- a/ruby_event_store-browser/lib/ruby_event_store/browser/gem_source.rb
+++ b/ruby_event_store-browser/lib/ruby_event_store/browser/gem_source.rb
@@ -9,7 +9,7 @@ def initialize(load_path)
         @path =
           load_path
             .select { |entry| String === entry }
-            .find { |entry| entry.match? %r{ruby_event_store-browser(?:-\d\.\d\.\d)?/lib\z} }
+            .find { |entry| entry.match? %r{ruby_event_store-browser(?:-\d+\.\d+\.\d+)?/lib\z} }
       end
 
       def version
@@ -21,7 +21,7 @@ def version
       end
 
       def from_rubygems?
-        path.match? %r{/gems/ruby_event_store-browser-\d\.\d\.\d/lib\z}
+        path.match? %r{/gems/ruby_event_store-browser-\d+\.\d+\.\d+/lib\z}
       end
 
       def from_git?
diff --git a/ruby_event_store-browser/spec/gem_source_spec.rb b/ruby_event_store-browser/spec/gem_source_spec.rb
index e387714d1e..05b4cc6b0b 100644
--- a/ruby_event_store-browser/spec/gem_source_spec.rb
+++ b/ruby_event_store-browser/spec/gem_source_spec.rb
@@ -37,6 +37,14 @@ module Browser
         expect(source).to be_from_git
       end
 
+      specify "don't crash on two–digit number in version string" do
+        path = "/Users/mostlyobvious/.rubies/ruby-3.1.2/lib/ruby/gems/3.1.0/gems/ruby_event_store-browser-#{RubyEventStore::VERSION}/lib"
+        source = GemSource.new([random_unrelated_path, path])
+
+        expect(source.version).to eq(RubyEventStore::VERSION)
+        expect(source).not_to be_from_git
+      end
+
       def random_unrelated_path
         "/kaka/dudu"
       end