diff --git a/index/Dockerfile b/index/Dockerfile
index 9933933..5f8ac5b 100644
--- a/index/Dockerfile
+++ b/index/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/osgeo/gdal:ubuntu-small-3.9.1
+FROM ghcr.io/osgeo/gdal:ubuntu-small-3.9.3
 
 ENV DEBIAN_FRONTEND=noninteractive \
     LC_ALL=C.UTF-8 \