diff --git a/.github/_typos.toml b/.github/_typos.toml
index 81e68cf0fcf53..eef1d70114af4 100644
--- a/.github/_typos.toml
+++ b/.github/_typos.toml
@@ -25,6 +25,7 @@ HD = "HD"                 # Test header value
 EOF = "EOF"               # End of File
 ans = "ans"               # Short for answers
 arange = "arange"         # Method in Python numpy package
+prompty = "prompty"       # prompty is a format name.
 
 [default.extend-identifiers]
 ags = "ags" # Azure Graph Service