diff --git a/package.json b/package.json
index b71dafe1c..5efcb7678 100644
--- a/package.json
+++ b/package.json
@@ -37,11 +37,11 @@
     "@agoric/ertp": "community-dev",
     "@agoric/zoe": "community-dev",
     "@agoric/zone": "community-dev",
-    "@endo/errors": "^1.2.6",
-    "@endo/far": "^1.1.6",
-    "@endo/marshal": "^1.5.4",
-    "@endo/pass-style": "^1.4.4",
-    "@endo/patterns": "^1.4.4",
+    "@endo/errors": "^1.2.7",
+    "@endo/far": "^1.1.8",
+    "@endo/marshal": "^1.6.1",
+    "@endo/pass-style": "^1.4.6",
+    "@endo/patterns": "^1.4.6",
     "typescript": "^4.9.5"
   },
   "devDependencies": {
@@ -51,11 +51,11 @@
     "@agoric/solo": "community-dev",
     "@agoric/store": "community-dev",
     "@agoric/vats": "community-dev",
-    "@endo/bundle-source": "^3.4.1",
-    "@endo/eventual-send": "^1.2.6",
-    "@endo/init": "^1.1.5",
-    "@endo/promise-kit": "^1.1.6",
-    "@endo/ses-ava": "^1.2.6",
+    "@endo/bundle-source": "^3.4.2",
+    "@endo/eventual-send": "^1.2.7",
+    "@endo/init": "^1.1.6",
+    "@endo/promise-kit": "^1.1.7",
+    "@endo/ses-ava": "^1.2.7",
     "@typescript-eslint/parser": "^4.33.0",
     "ava": "^4.3.3",
     "eslint": "^7.32.0",
@@ -68,7 +68,7 @@
     "glob": "7.1.7",
     "import-meta-resolve": "^2.2.2",
     "prettier": "^3.3.3",
-    "ses": "^1.9.0",
+    "ses": "^1.9.1",
     "stylus": "^0.62.0",
     "vitepress": "1.3.4"
   },
diff --git a/yarn.lock b/yarn.lock
index b529399a5..9d8ff2326 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -237,16 +237,16 @@ __metadata:
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     "@agoric/zoe": "npm:community-dev"
     "@agoric/zone": "npm:community-dev"
-    "@endo/bundle-source": "npm:^3.4.1"
-    "@endo/errors": "npm:^1.2.6"
-    "@endo/eventual-send": "npm:^1.2.6"
-    "@endo/far": "npm:^1.1.6"
-    "@endo/init": "npm:^1.1.5"
-    "@endo/marshal": "npm:^1.5.4"
-    "@endo/pass-style": "npm:^1.4.4"
-    "@endo/patterns": "npm:^1.4.4"
-    "@endo/promise-kit": "npm:^1.1.6"
-    "@endo/ses-ava": "npm:^1.2.6"
+    "@endo/bundle-source": "npm:^3.4.2"
+    "@endo/errors": "npm:^1.2.7"
+    "@endo/eventual-send": "npm:^1.2.7"
+    "@endo/far": "npm:^1.1.8"
+    "@endo/init": "npm:^1.1.6"
+    "@endo/marshal": "npm:^1.6.1"
+    "@endo/pass-style": "npm:^1.4.6"
+    "@endo/patterns": "npm:^1.4.6"
+    "@endo/promise-kit": "npm:^1.1.7"
+    "@endo/ses-ava": "npm:^1.2.7"
     "@typescript-eslint/parser": "npm:^4.33.0"
     ava: "npm:^4.3.3"
     eslint: "npm:^7.32.0"
@@ -259,7 +259,7 @@ __metadata:
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     import-meta-resolve: "npm:^2.2.2"
     prettier: "npm:^3.3.3"
-    ses: "npm:^1.9.0"
+    ses: "npm:^1.9.1"
     stylus: "npm:^0.62.0"
     typescript: "npm:^4.9.5"
     vitepress: "npm:1.3.4"
@@ -1566,15 +1566,15 @@ __metadata:
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-  version: 3.4.1
-  resolution: "@endo/bundle-source@npm:3.4.1"
+"@endo/bundle-source@npm:^3.4.2":
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+  resolution: "@endo/bundle-source@npm:3.4.2"
   dependencies:
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-    "@endo/compartment-mapper": "npm:^1.3.0"
-    "@endo/evasive-transform": "npm:^1.3.1"
-    "@endo/init": "npm:^1.1.5"
-    "@endo/promise-kit": "npm:^1.1.6"
+    "@endo/compartment-mapper": "npm:^1.3.1"
+    "@endo/evasive-transform": "npm:^1.3.2"
+    "@endo/init": "npm:^1.1.6"
+    "@endo/promise-kit": "npm:^1.1.7"
     "@endo/where": "npm:^1.0.8"
     "@rollup/plugin-commonjs": "npm:^19.0.0"
     "@rollup/plugin-json": "npm:^6.1.0"
@@ -1583,7 +1583,7 @@ __metadata:
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   bin:
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-  resolution: "@endo/common@npm:1.2.6"
+"@endo/common@npm:^1.2.7":
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+  resolution: "@endo/common@npm:1.2.7"
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-    "@endo/eventual-send": "npm:^1.2.6"
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-  resolution: "@endo/compartment-mapper@npm:1.3.0"
+"@endo/compartment-mapper@npm:^1.3.1":
+  version: 1.3.1
+  resolution: "@endo/compartment-mapper@npm:1.3.1"
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-    "@endo/module-source": "npm:^1.1.0"
+    "@endo/module-source": "npm:^1.1.1"
     "@endo/trampoline": "npm:^1.0.2"
     "@endo/zip": "npm:^1.0.8"
-    ses: "npm:^1.9.0"
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+    ses: "npm:^1.9.1"
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-  resolution: "@endo/errors@npm:1.2.6"
+"@endo/errors@npm:^1.2.7":
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+  resolution: "@endo/errors@npm:1.2.7"
   dependencies:
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+    ses: "npm:^1.9.1"
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-  version: 1.3.1
-  resolution: "@endo/evasive-transform@npm:1.3.1"
+"@endo/evasive-transform@npm:^1.3.2":
+  version: 1.3.2
+  resolution: "@endo/evasive-transform@npm:1.3.2"
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-  version: 1.2.6
-  resolution: "@endo/eventual-send@npm:1.2.6"
+"@endo/eventual-send@npm:^1.2.7":
+  version: 1.2.7
+  resolution: "@endo/eventual-send@npm:1.2.7"
   dependencies:
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-  version: 1.1.6
-  resolution: "@endo/far@npm:1.1.6"
+"@endo/far@npm:^1.1.8":
+  version: 1.1.8
+  resolution: "@endo/far@npm:1.1.8"
   dependencies:
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-    "@endo/eventual-send": "npm:^1.2.6"
-    "@endo/pass-style": "npm:^1.4.4"
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+    "@endo/eventual-send": "npm:^1.2.7"
+    "@endo/pass-style": "npm:^1.4.6"
+  checksum: 10c0/efb0f063e7a19fd67fe150e0a018a9e4b2abd5238b3c3d136830732aa3294bdb829c1a920607360c285eb6e3a3ae5337b6a1e9847cfcf5618247431af02c5a1e
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-  version: 1.1.5
-  resolution: "@endo/init@npm:1.1.5"
+"@endo/init@npm:^1.1.6":
+  version: 1.1.6
+  resolution: "@endo/init@npm:1.1.6"
   dependencies:
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-    "@endo/eventual-send": "npm:^1.2.6"
-    "@endo/lockdown": "npm:^1.0.11"
-    "@endo/promise-kit": "npm:^1.1.6"
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+    "@endo/eventual-send": "npm:^1.2.7"
+    "@endo/lockdown": "npm:^1.0.12"
+    "@endo/promise-kit": "npm:^1.1.7"
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-  version: 1.0.11
-  resolution: "@endo/lockdown@npm:1.0.11"
+"@endo/lockdown@npm:^1.0.12":
+  version: 1.0.12
+  resolution: "@endo/lockdown@npm:1.0.12"
   dependencies:
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-  version: 1.5.4
-  resolution: "@endo/marshal@npm:1.5.4"
+"@endo/marshal@npm:^1.6.1":
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+  resolution: "@endo/marshal@npm:1.6.1"
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-    "@endo/eventual-send": "npm:^1.2.6"
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+    "@endo/pass-style": "npm:^1.4.6"
+    "@endo/promise-kit": "npm:^1.1.7"
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-  version: 1.1.0
-  resolution: "@endo/module-source@npm:1.1.0"
+"@endo/module-source@npm:^1.1.1":
+  version: 1.1.1
+  resolution: "@endo/module-source@npm:1.1.1"
   dependencies:
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+"@endo/nat@npm:^5.0.12":
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+  resolution: "@endo/nat@npm:5.0.12"
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-  resolution: "@endo/pass-style@npm:1.4.4"
+"@endo/pass-style@npm:^1.4.6":
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+  resolution: "@endo/pass-style@npm:1.4.6"
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-    "@endo/eventual-send": "npm:^1.2.6"
-    "@endo/promise-kit": "npm:^1.1.6"
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+    "@endo/eventual-send": "npm:^1.2.7"
+    "@endo/promise-kit": "npm:^1.1.7"
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-  resolution: "@endo/patterns@npm:1.4.4"
+"@endo/patterns@npm:^1.4.6":
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+    "@endo/eventual-send": "npm:^1.2.7"
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-  resolution: "@endo/promise-kit@npm:1.1.6"
+"@endo/promise-kit@npm:^1.1.7":
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+  resolution: "@endo/promise-kit@npm:1.1.7"
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@@ -2059,16 +2059,16 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@endo/ses-ava@npm:^1.2.6":
-  version: 1.2.6
-  resolution: "@endo/ses-ava@npm:1.2.6"
+"@endo/ses-ava@npm:^1.2.7":
+  version: 1.2.7
+  resolution: "@endo/ses-ava@npm:1.2.7"
   dependencies:
     "@endo/env-options": "npm:^1.1.7"
-    "@endo/init": "npm:^1.1.5"
-    ses: "npm:^1.9.0"
+    "@endo/init": "npm:^1.1.6"
+    ses: "npm:^1.9.1"
   peerDependencies:
     ava: ^5.3.0 || ^6.1.2
-  checksum: 10c0/67ca158ba4ada960e8bf5c2a52231c8a3bae43aaaa442ac8d04a2a712c6e550da666289c852aee8212822574f1d1407173ab92b7c877b80b39676b75e897a3eb
+  checksum: 10c0/eaddb89ee939e162338d22df1978b5ed6b69d9780b2c68862161dcb96f910c08336bbf546231d73e3212d7259e45581661c3499b9d228c510b5939b5f0a9a25f
   languageName: node
   linkType: hard
 
@@ -8371,12 +8371,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ses@npm:^1.9.0":
-  version: 1.9.0
-  resolution: "ses@npm:1.9.0"
+"ses@npm:^1.9.1":
+  version: 1.9.1
+  resolution: "ses@npm:1.9.1"
   dependencies:
     "@endo/env-options": "npm:^1.1.7"
-  checksum: 10c0/356f9601b04a87f33403a15fc627caf0c649d86d8d7ee1f4b3c75b947ab05c31b254c94c0aa26e9904862787c73950d5a60f3435deebe5dba23017e20c40b0cb
+  checksum: 10c0/1e795542954f635aaee2749a1d548460f2978257cb29daaea76b814ef99ffa64ab5cca05fbc3d51a814a57cf9fc4563988ee93312cc53bae4eb63dfff0f0682a
   languageName: node
   linkType: hard