diff --git a/.github.sample/actions/latex/Dockerfile b/.github.sample/actions/latex/Dockerfile
index 776c7a2..e67dbbb 100644
--- a/.github.sample/actions/latex/Dockerfile
+++ b/.github.sample/actions/latex/Dockerfile
@@ -3,4 +3,5 @@ FROM paperist/alpine-texlive-ja
 RUN apk add bash git jq
 
 ADD entrypoint.sh /entrypoint.sh
+RUN ["chmod", "+x", "/entrypoint.sh"]
 ENTRYPOINT ["/entrypoint.sh"]