diff --git a/bin/output-year-index.sh b/bin/output-year-index.sh
index 9a41637b2..12f2a9f9e 100755
--- a/bin/output-year-index.sh
+++ b/bin/output-year-index.sh
@@ -127,6 +127,7 @@ export TOPDIR
 export DOCROOT_SLASH="../../"
 export REPO_URL="https://github.com/ioccc-src/temp-test-ioccc/blob/master"
 export SITE_URL="https://ioccc-src.github.io/temp-test-ioccc"
+export PANDOC_WRAPPER="bin/pandoc-wrapper.sh"
 
 # set usage message
 #