diff --git a/proposals/74:upgrade-15/package.json b/proposals/74:upgrade-15/package.json
index 3c2abf85..d22dafdc 100644
--- a/proposals/74:upgrade-15/package.json
+++ b/proposals/74:upgrade-15/package.json
@@ -1,7 +1,7 @@
 {
   "agoricProposal": {
     "releaseNotes": "https://github.com/Agoric/agoric-sdk/releases/tag/agoric-upgrade-15",
-    "sdkImageTag": "42",
+    "sdkImageTag": "43",
     "planName": "agoric-upgrade-15",
     "upgradeInfo": {
       "binaries": {