diff --git a/.github/actions/spell-check/excludes.txt b/.github/actions/spell-check/excludes.txt
index 3ff417395..fbb970184 100644
--- a/.github/actions/spell-check/excludes.txt
+++ b/.github/actions/spell-check/excludes.txt
@@ -6,6 +6,7 @@ ignore$
 \.icc$
 \.jpg$
 \.png$
+\.hpp$
 \.props$
 ^appveyor\.yml$
 ^imageflow_core/tests/visuals\.rs$