diff --git a/stages/org.osbuild.experimental.ostree.config b/stages/org.osbuild.experimental.ostree.config
new file mode 100755
index 00000000..5b8bec63
--- /dev/null
+++ b/stages/org.osbuild.experimental.ostree.config
@@ -0,0 +1,64 @@
+#!/usr/bin/python3
+"""
+Change OSTree configuration experimental options
+
+NOTE: This stage is experimental and subject to changes
+
+Change the configuration for an OSTree repository.
+Currently only the following values are supported:
+  - `integrity.composefs`
+
+See `ostree.repo-config(5)` for more information.
+"""
+
+import os
+import sys
+
+import osbuild.api
+from osbuild.util import ostree
+
+SCHEMA = """
+"additionalProperties": false,
+"required": ["repo"],
+"properties": {
+  "repo": {
+    "description": "Location of the OSTree repo.",
+    "type": "string"
+  },
+  "config": {
+    "type": "object",
+    "additionalProperties": false,
+    "description": "OSTree configuration groups",
+    "properties": {
+      "integrity": {
+        "type": "object",
+        "additionalProperties": false,
+        "description": "Options concerning the sysroot",
+        "properties": {
+          "composefs": {
+            "description": "Enable composefs image generation on deploy.",
+            "type": "string",
+            "enum": ["true", "false", "maybe"]
+          }
+        }
+      }
+    }
+  }
+}
+"""
+
+
+def main(tree, options):
+    repo = os.path.join(tree, options["repo"].lstrip("/"))
+    integrity_options = options["config"].get("integrity", {})
+
+    composefs = integrity_options.get("composefs")
+    if composefs is not None:
+        ostree.cli("config", "set", "ex-integrity.composefs", composefs, repo=repo)
+
+
+if __name__ == '__main__':
+    stage_args = osbuild.api.arguments()
+    r = main(stage_args["tree"],
+             stage_args["options"])
+    sys.exit(r)