diff --git a/src/spdx_tools/spdx/validation/uri_validators.py b/src/spdx_tools/spdx/validation/uri_validators.py
index c14d196f4..1763ebd25 100644
--- a/src/spdx_tools/spdx/validation/uri_validators.py
+++ b/src/spdx_tools/spdx/validation/uri_validators.py
@@ -9,7 +9,7 @@
 
 url_pattern = (
     "(http:\\/\\/www\\.|https:\\/\\/www\\.|http:\\/\\/|https:\\/\\/|ssh:\\/\\/|git:\\/\\/|svn:\\/\\/|sftp:"
-    "\\/\\/|ftp:\\/\\/)?([\\w\\-.!~*'()%;:&=+$,]+@)?[a-z0-9]+([\\-\\.]{1}[a-z0-9]+){0,100}\\.[a-z]{2,5}"
+    "\\/\\/|ftp:\\/\\/)?([\\w\\-.!~*'()%;:&=+$,]+@)?[a-zA-Z0-9]+([\\-\\.]{1}[a-zA-Z0-9]+){0,100}\\.[a-zA-Z]{2,5}"
     "(:[0-9]{1,5})?(\\/.*)?"
 )
 supported_download_repos: str = "(git|hg|svn|bzr)"
diff --git a/tests/spdx/validation/test_uri_validators.py b/tests/spdx/validation/test_uri_validators.py
index 2d374ee8e..59ad81ccc 100644
--- a/tests/spdx/validation/test_uri_validators.py
+++ b/tests/spdx/validation/test_uri_validators.py
@@ -14,6 +14,7 @@
         "https://spdx.org/spdxdocs/spdx-tools-v1.2-3F2504E0-4F89-41D3-9A0C-0305E82...",
         "http://some.url",
         "http://ftp.gnu.org/gnu/glibc/glibc-ports-2.15.tar.gz",
+        "http://some.url",
     ],
 )
 def test_valid_url(input_value):
@@ -106,6 +107,7 @@ def test_invalid_package_download_location(input_value):
         "https://spdx.org/spdxdocs/spdx-tools-v1.2-3F2504E0-4F89-41D3-9A0C-0305E82...",
         "h://someweirdtest^?",
         "https://some.uri that goes on!?",
+        "HTTPS://ANURIINCAPITALS.ORG",
     ],
 )
 def test_valid_uri(input_value):