diff --git a/README.md b/README.md
index 14b54dc..ae2a526 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,8 @@ Around the time of DAC 2005, the IEEE P1685 working group was formed.
 
 **Unknown License State**
 
+* [IP-XACT 1.1](http://www.accellera.org/XMLSchema/SPIRIT/1.1/)  
+  ❌ © Copyright Accellera Systems Initiative. All rights reserved.
 * [IP-XACT 1.0](http://www.accellera.org/XMLSchema/SPIRIT/1.0/)  
   ❌ © Copyright Accellera Systems Initiative. All rights reserved.
 
diff --git a/tests/unit/IPXACT.py b/tests/unit/IPXACT.py
index c498335..44da8fd 100644
--- a/tests/unit/IPXACT.py
+++ b/tests/unit/IPXACT.py
@@ -33,3 +33,25 @@ def test_Schema10(self):
 			schemaFile = directory / file
 			print(f"  {schemaFile}")
 			_ = XMLSchema(schemaFile)
+
+	def test_Schema11(self):
+		print()
+		print(f"CWD:              {Path.cwd()}")
+
+		directory = self._root / "ipxact-1.1"
+		print(f"Schema directory: {directory}")
+
+		schemaFiles = (
+			"design.xsd",
+			"pmd.xsd",
+			"component.xsd",
+			"busDefinition.xsd",
+			"generator.xsd",
+			"configurator.xsd",
+			"looseGeneratorInvocation.xsd",
+		)
+		print(f"Reading schemas ...")
+		for file in schemaFiles:
+			schemaFile = directory / file
+			print(f"  {schemaFile}")
+			_ = XMLSchema(schemaFile)