diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1cc3d6c..ea95f37 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,6 +20,7 @@ jobs:
           - 3.7
           - 3.8
           - 3.9
+          - "3.10"
 
     steps:
       - uses: actions/checkout@v2
diff --git a/peakrdl/uvm/__about__.py b/peakrdl/uvm/__about__.py
index 5fa9130..f6bb6f4 100644
--- a/peakrdl/uvm/__about__.py
+++ b/peakrdl/uvm/__about__.py
@@ -1 +1 @@
-__version__ = "2.0.3"
+__version__ = "2.0.4"
diff --git a/peakrdl/uvm/exporter.py b/peakrdl/uvm/exporter.py
index dbbbd39..c37f472 100644
--- a/peakrdl/uvm/exporter.py
+++ b/peakrdl/uvm/exporter.py
@@ -382,7 +382,7 @@ def _get_field_access(self, field: FieldNode) -> str:
     def _get_mem_access(self, mem: MemNode) -> str:
         sw = mem.get_property("sw")
         if sw == AccessType.r:
-            return "R"
+            return "RO"
         else:
             return "RW"
 
diff --git a/setup.py b/setup.py
index c5d5cd2..c09615b 100644
--- a/setup.py
+++ b/setup.py
@@ -33,6 +33,7 @@
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3 :: Only",
         "Intended Audience :: Developers",
         "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",