diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4d9581c..caaa28d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## [0.2.8] - Unreleased
 - Fixed bug with subtype for semantic code
+- Changed URI representation to upper case
 - Added line conversion tool
 - Updated dependencies
 
diff --git a/docs/changelog.md b/docs/changelog.md
index 4d9581c..caaa28d 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -2,6 +2,7 @@
 
 ## [0.2.8] - Unreleased
 - Fixed bug with subtype for semantic code
+- Changed URI representation to upper case
 - Added line conversion tool
 - Updated dependencies
 
diff --git a/iscc_core/models.py b/iscc_core/models.py
index 9d6deae..c7e48d9 100644
--- a/iscc_core/models.py
+++ b/iscc_core/models.py
@@ -87,7 +87,7 @@ def code(self) -> str:
     @property
     def uri(self) -> str:
         """Standard uri representation of an ISCC code."""
-        return f"iscc:{self.code.lower()}"
+        return f"ISCC:{self.code.upper()}"
 
     @property
     def bytes(self) -> bytes:
diff --git a/tests/test_codec.py b/tests/test_codec.py
index f456c80..7983ed3 100644
--- a/tests/test_codec.py
+++ b/tests/test_codec.py
@@ -183,7 +183,7 @@ def test_code_hashable():
 def test_Code_uri():
     mco = ic.Code(ic.gen_meta_code("This is an URI representation of a Meta-Code")["iscc"])
     assert mco.code == "AAAX334V4AMT2PP4"
-    assert mco.uri == "iscc:aaax334v4amt2pp4"
+    assert mco.uri == "ISCC:AAAX334V4AMT2PP4"
 
 
 def test_Code_mf_base16():