diff --git a/import_diff.sh b/import_diff.sh
new file mode 100755
index 0000000..3f51e74
--- /dev/null
+++ b/import_diff.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+set -o errexit
+set -o pipefail
+set -o nounset
+
+readonly PG_CONNECT="postgis://$POSTGRES_USER:$POSTGRES_PASSWORD@$POSTGRES_HOST/$POSTGRES_DB"
+
+function import_diff() {
+    imposm3 diff \
+        -connection "$PG_CONNECT" \
+        -mapping "$MAPPING_YAML" \
+        -cachedir "$IMPOSM_CACHE_DIR" \
+        -diffdir "$IMPORT_DIR" \
+        -expiretiles-dir "$IMPORT_DIR" \
+        -expiretiles-zoom 14 \
+        -config config.json "$IMPORT_DIR/changes.osc.gz"
+}
+
+import_diff