diff --git a/.gitignore b/.gitignore
index 887ce84..18cfc0a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,7 @@
 *.so
 *.o
 *.a
+.*.sw?
 mkmf.log
 tags
 /coverage/
diff --git a/db/unicode_ranges_2.1.pstore b/db/unicode_ranges_2.1.pstore
deleted file mode 120000
index 6cfebc2..0000000
--- a/db/unicode_ranges_2.1.pstore
+++ /dev/null
@@ -1 +0,0 @@
-unicode_ranges_2.0.pstore
\ No newline at end of file
diff --git a/lib/regexp-examples/helpers.rb b/lib/regexp-examples/helpers.rb
index f2edc09..e80fd3d 100644
--- a/lib/regexp-examples/helpers.rb
+++ b/lib/regexp-examples/helpers.rb
@@ -19,7 +19,8 @@ def self.permutations_of_strings(arrays_of_strings, max_results_limiter = MaxRes
   end
 
   def self.join_preserving_capture_groups(result)
-    # Only save the LAST group from repeated capture groups, e.g. /([ab]){2}/
+    # Only save the LAST group from repeated capture groups, because
+    # e.g. /([ab]){2} \1/.examples should NOT include "ab a"
     # (Hence the need for "reverse"!)
     subgroups = result
                 .flat_map(&:all_subgroups)
diff --git a/lib/regexp-examples/unicode_char_ranges.rb b/lib/regexp-examples/unicode_char_ranges.rb
index 31e9c28..7daaec0 100644
--- a/lib/regexp-examples/unicode_char_ranges.rb
+++ b/lib/regexp-examples/unicode_char_ranges.rb
@@ -14,8 +14,8 @@ class UnicodeCharRanges
 
     attr_reader :range_store
 
-    def initialize(filename = STORE_FILENAME)
-      @range_store = PStore.new(File.expand_path("../../../db/#{filename}", __FILE__))
+    def initialize
+      @range_store = PStore.new(unicode_ranges_file)
     end
 
     def get(key)
@@ -28,6 +28,13 @@ def get(key)
 
     private
 
+    def unicode_ranges_file
+      db_path = File.join(__dir__, '../../db')
+      Dir["#{db_path}/*.pstore"].sort.select do |file|
+        file <= "#{db_path}/unicode_ranges_#{RUBY_VERSION[0..2]}.pstore"
+      end.last
+    end
+
     # TODO: Document example input/output of this method
     # It's pretty simple, but this code is a little confusing!!
     def ranges_to_unicode(ranges)
diff --git a/lib/regexp-examples/version.rb b/lib/regexp-examples/version.rb
index 456477d..4faeac9 100644
--- a/lib/regexp-examples/version.rb
+++ b/lib/regexp-examples/version.rb
@@ -1,4 +1,4 @@
 # Gem version
 module RegexpExamples
-  VERSION = '1.2.1'
+  VERSION = '1.3.0'
 end