diff --git a/Viewer/package-lock.json b/Viewer/package-lock.json
index 18ba335b..614fb2c8 100755
--- a/Viewer/package-lock.json
+++ b/Viewer/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "ImageGrid.Viewer.g4",
-  "version": "4.0.0-a",
+  "version": "4.0.0a",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -1112,9 +1112,9 @@
       "integrity": "sha512-EzT4CP6d6lI8bnknNgT3W8mUQhSVXflO0yPbKD4dKsFcINiC6npjoEBz+8m3VQmWJhc+36pXD4JLwNxUEgzi+Q=="
     },
     "ig-types": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/ig-types/-/ig-types-2.0.0.tgz",
-      "integrity": "sha512-CUxqit6W4vjf3fnxVq1KGITRhI6//PiJcaha0CbHZqKutAvPXPjYOzlPdx9HL00LvmU7iNnOcyzWLrCnYd3Myw==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/ig-types/-/ig-types-2.0.1.tgz",
+      "integrity": "sha512-hiNlUxNvfgoSoH6r2P7Qn3v+W5IEuVIian7UqNK3zjCkZNiOn8XN6hNu7iHnFBoZcxT19+B4nQ6OnwXogGISag==",
       "requires": {
         "ig-object": "^5.2.8",
         "object-run": "^1.0.1"
diff --git a/Viewer/package.json b/Viewer/package.json
index ee086461..c319cf54 100755
--- a/Viewer/package.json
+++ b/Viewer/package.json
@@ -31,7 +31,7 @@
     "ig-argv": "^2.15.0",
     "ig-features": "^3.4.2",
     "ig-object": "^5.2.8",
-    "ig-types": "^2.0.0",
+    "ig-types": "^2.0.1",
     "moment": "^2.29.0",
     "object-run": "^1.0.1",
     "requirejs": "^2.3.6",