diff --git a/agoric/yarn.lock b/agoric/yarn.lock
index 8c9b107f7..71e802d25 100644
--- a/agoric/yarn.lock
+++ b/agoric/yarn.lock
@@ -533,16 +533,6 @@
     "@babel/highlight" "^7.22.13"
     chalk "^2.4.2"
 
-"@babel/generator@^7.22.15":
-  version "7.22.15"
-  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.22.15.tgz#1564189c7ec94cb8f77b5e8a90c4d200d21b2339"
-  integrity sha512-Zu9oWARBqeVOW0dZOjXc3JObrzuqothQ3y/n1kUtrjCoCPLkXUwMvOo/F/TCfoHMbWIFlWwpZtkZVb9ga4U2pA==
-  dependencies:
-    "@babel/types" "^7.22.15"
-    "@jridgewell/gen-mapping" "^0.3.2"
-    "@jridgewell/trace-mapping" "^0.3.17"
-    jsesc "^2.5.1"
-
 "@babel/generator@^7.23.0":
   version "7.23.0"
   resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.23.0.tgz#df5c386e2218be505b34837acbcb874d7a983420"
@@ -558,14 +548,6 @@
   resolved "https://registry.yarnpkg.com/@babel/helper-environment-visitor/-/helper-environment-visitor-7.22.20.tgz#96159db61d34a29dba454c959f5ae4a649ba9167"
   integrity sha512-zfedSIzFhat/gFhWfHtgWvlec0nqB9YEIVrpuwjruLlXfUSnA8cJB0miHKwqDnQ7d32aKo2xt88/xZptwxbfhA==
 
-"@babel/helper-function-name@^7.22.5":
-  version "7.22.5"
-  resolved "https://registry.yarnpkg.com/@babel/helper-function-name/-/helper-function-name-7.22.5.tgz#ede300828905bb15e582c037162f99d5183af1be"
-  integrity sha512-wtHSq6jMRE3uF2otvfuD3DIvVhOsSNshQl0Qrd7qC9oQJzHvOL4qQXlQn2916+CXGywIjpGuIkoyZRRxHPiNQQ==
-  dependencies:
-    "@babel/template" "^7.22.5"
-    "@babel/types" "^7.22.5"
-
 "@babel/helper-function-name@^7.23.0":
   version "7.23.0"
   resolved "https://registry.yarnpkg.com/@babel/helper-function-name/-/helper-function-name-7.23.0.tgz#1f9a3cdbd5b2698a670c30d2735f9af95ed52759"
@@ -607,7 +589,7 @@
     chalk "^2.4.2"
     js-tokens "^4.0.0"
 
-"@babel/parser@^7.17.3", "@babel/parser@^7.22.15", "@babel/parser@^7.22.16":
+"@babel/parser@^7.17.3", "@babel/parser@^7.22.15":
   version "7.22.16"
   resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.22.16.tgz#180aead7f247305cce6551bea2720934e2fa2c95"
   integrity sha512-+gPfKv8UWeKKeJTUxe59+OobVcrYHETCsORl61EmSkmgymguYk/X5bp7GuUIXaFsc6y++v8ZxPsLSSuujqDphA==
@@ -624,7 +606,7 @@
   dependencies:
     regenerator-runtime "^0.14.0"
 
-"@babel/template@^7.22.15", "@babel/template@^7.22.5":
+"@babel/template@^7.22.15":
   version "7.22.15"
   resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.22.15.tgz#09576efc3830f0430f4548ef971dde1350ef2f38"
   integrity sha512-QPErUVm4uyJa60rkI73qneDacvdvzxshT3kksGqlGWYdOTIUOwJ7RDUL8sGqslY1uXWSL6xMFKEXDS3ox2uF0w==
@@ -633,26 +615,10 @@
     "@babel/parser" "^7.22.15"
     "@babel/types" "^7.22.15"
 
-"@babel/traverse@^7.17.3":
-  version "7.22.20"
-  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.22.20.tgz#db572d9cb5c79e02d83e5618b82f6991c07584c9"
-  integrity sha512-eU260mPZbU7mZ0N+X10pxXhQFMGTeLb9eFS0mxehS8HZp9o1uSnFeWQuG1UPrlxgA7QoUzFhOnilHDp0AXCyHw==
-  dependencies:
-    "@babel/code-frame" "^7.22.13"
-    "@babel/generator" "^7.22.15"
-    "@babel/helper-environment-visitor" "^7.22.20"
-    "@babel/helper-function-name" "^7.22.5"
-    "@babel/helper-hoist-variables" "^7.22.5"
-    "@babel/helper-split-export-declaration" "^7.22.6"
-    "@babel/parser" "^7.22.16"
-    "@babel/types" "^7.22.19"
-    debug "^4.1.0"
-    globals "^11.1.0"
-
-"@babel/traverse@^7.7.0":
-  version "7.23.0"
-  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.23.0.tgz#18196ddfbcf4ccea324b7f6d3ada00d8c5a99c53"
-  integrity sha512-t/QaEvyIoIkwzpiZ7aoSKK8kObQYeF7T2v+dazAYCb8SXtp58zEVkWW7zAnju8FNKNdr4ScAOEDmMItbyOmEYw==
+"@babel/traverse@^7.17.3", "@babel/traverse@^7.7.0":
+  version "7.23.2"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.23.2.tgz#329c7a06735e144a506bdb2cad0268b7f46f4ad8"
+  integrity sha512-azpe59SQ48qG6nu2CzcMLbxUudtN+dOM9kDbUqGq3HXUJRlo7i8fvPoxQUzYgLZ4cMVmuZgm8vvBpNeRhd6XSw==
   dependencies:
     "@babel/code-frame" "^7.22.13"
     "@babel/generator" "^7.23.0"
@@ -665,7 +631,7 @@
     debug "^4.1.0"
     globals "^11.1.0"
 
-"@babel/types@^7.17.0", "@babel/types@^7.22.15", "@babel/types@^7.22.19", "@babel/types@^7.22.5":
+"@babel/types@^7.17.0", "@babel/types@^7.22.15", "@babel/types@^7.22.5":
   version "7.22.19"
   resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.22.19.tgz#7425343253556916e440e662bb221a93ddb75684"
   integrity sha512-P7LAw/LbojPzkgp5oznjE6tQEIWbp4PkkfrZDINTro9zgBRtI324/EYsiSI7lhPbpIQ+DCeR2NNmMWANGGfZsg==