diff --git a/.github/actions/spelling/allow.txt b/.github/actions/spelling/allow.txt
index 64dd9a9..c220908 100644
--- a/.github/actions/spelling/allow.txt
+++ b/.github/actions/spelling/allow.txt
@@ -3,4 +3,5 @@ https
 ssh
 ubuntu
 workarounds
-rjack
\ No newline at end of file
+rjack
+msgbox
\ No newline at end of file
diff --git a/.github/actions/spelling/patterns.txt b/.github/actions/spelling/patterns.txt
index 0296702..684f515 100644
--- a/.github/actions/spelling/patterns.txt
+++ b/.github/actions/spelling/patterns.txt
@@ -132,3 +132,7 @@ go install(?:\s+[a-z]+\.[-@\w/.]+)+
 # hit-count: 1 file-count: 1
 # microsoft
 \b(?:https?://|)(?:(?:(?:blogs|download\.visualstudio|docs|msdn2?|research)\.|)microsoft|blogs\.msdn)\.co(?:m|\.\w\w)/[-_a-zA-Z0-9()=./%]*
+
+# hit-count: 1 file-count: 1
+# data url
+\bdata:[-a-zA-Z=;:/0-9+]*,\S*
\ No newline at end of file