diff --git a/docker/dockerfiles/joex.dockerfile b/docker/dockerfiles/joex.dockerfile
index f641607e..89033c4f 100644
--- a/docker/dockerfiles/joex.dockerfile
+++ b/docker/dockerfiles/joex.dockerfile
@@ -33,6 +33,7 @@ RUN apk update && \
     tesseract-ocr-data-pol \
     tesseract-ocr-data-est \
     tesseract-ocr-data-ukr \
+    tesseract-ocr-data-khm \
     unpaper \
     weasyprint \
     libreoffice \