diff --git a/CHANGELOG.md b/CHANGELOG.md
index 00600be..2067229 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## [Unreleased]
 
+- Support Hash type https://github.com/euglena1215/rbs_inline_data/pull/1
+
 ## [0.1.0] - 2024-06-09
 
 - Initial release
diff --git a/lib/rbs_inline_data/parser.rb b/lib/rbs_inline_data/parser.rb
index 5d31696..775cbb2 100644
--- a/lib/rbs_inline_data/parser.rb
+++ b/lib/rbs_inline_data/parser.rb
@@ -86,7 +86,7 @@ def extract_definition(node)
 
       fields = field_text.split("\n").map(&:strip).reject(&:empty?).map do |str|
         case str
-        when /:(\w+),? #:: ([\w\:\[\]]+)/
+        when /:(\w+),? #:: ([\w\:\[\], ]+)/
           [::Regexp.last_match(1), ::Regexp.last_match(2)]
         when /:(\w+),?/
           [::Regexp.last_match(1), "untyped"]
diff --git a/test/rbs_inline_data/parser_test.rb b/test/rbs_inline_data/parser_test.rb
index 2b70a46..ff4a355 100644
--- a/test/rbs_inline_data/parser_test.rb
+++ b/test/rbs_inline_data/parser_test.rb
@@ -105,5 +105,21 @@ class C; end
           Parser::TypedField.new(field_name: "y", type: "Array[A::B::C]"),
         ])
     end
+
+    def test_hash_type
+      definitions = Parser.parse(parse_ruby(<<~RUBY))
+        class A
+          B = Data.define(
+            :x, #:: Hash[Symbol, String]
+          )
+        end
+      RUBY
+
+      assert_equal definitions[0], Parser::TypedDefinition.new(
+        class_name: "A::B",
+        fields: [
+          Parser::TypedField.new(field_name: "x", type: "Hash[Symbol, String]"),
+        ])
+    end
   end
 end