diff --git a/config/dev-server-config.json b/config/dev-server-config.json
index 6b5417ee5..0dd7070d7 100644
--- a/config/dev-server-config.json
+++ b/config/dev-server-config.json
@@ -57,8 +57,8 @@
 				"sourceRoot": ["_env", "${CAMLI_DEV_CAMLI_ROOT}", ""],
 				"cache": "/cache/",
 				"scaledImage": {
-					"type": "kv",
-					"file": ["_env", "${CAMLI_ROOT_CACHE}/thumbnails.kv", ""]
+					"type": "leveldb",
+					"file": ["_env", "${CAMLI_ROOT_CACHE}/thumbnails.leveldb", ""]
 				}
 			}
 		},
@@ -127,9 +127,9 @@
 				"smallBlobs": "/bs-loose/",
 				"largeBlobs": "/bs-packed/",
 				"metaIndex": {
-					"type": "kv",
-					"file": ["_env", "${CAMLI_ROOT}/packindex.kv"]
-                                }
+					"type": "leveldb",
+					"file": ["_env", "${CAMLI_ROOT}/packindex.leveldb"]
+				}
 			}
 		},