diff --git a/packages/cosmic-proto/package.json b/packages/cosmic-proto/package.json
index 06a0408c403..3da791d9e81 100644
--- a/packages/cosmic-proto/package.json
+++ b/packages/cosmic-proto/package.json
@@ -32,10 +32,18 @@
       "types": "./dist/codegen/cosmos/*.d.ts",
       "default": "./dist/codegen/cosmos/*.js"
     },
+    "./cosmos/tx/v1beta1/tx.js": {
+      "types": "./dist/codegen/cosmos/tx/v1beta1/tx.d.ts",
+      "default": "./dist/codegen/cosmos/tx/v1beta1/tx.js"
+    },
     "./google/*.js": {
       "types": "./dist/codegen/google/*.d.ts",
       "default": "./dist/codegen/google/*.js"
     },
+    "./google/protobuf/any.js": {
+      "types": "./dist/codegen/google/protobuf/any.d.ts",
+      "default": "./dist/codegen/google/protobuf/any.js"
+    },
     "./ibc/*.js": {
       "types": "./dist/codegen/ibc/*.d.ts",
       "default": "./dist/codegen/ibc/*.js"
diff --git a/packages/cosmic-proto/package.json.md b/packages/cosmic-proto/package.json.md
new file mode 100644
index 00000000000..01a1fa966fd
--- /dev/null
+++ b/packages/cosmic-proto/package.json.md
@@ -0,0 +1,5 @@
+# Notes about this package.json
+
+The `exports` field uses [subpath patterns](https://nodejs.org/docs/latest-v18.x/api/packages.html#subpath-patterns) but Endo's bundler doesn't yet support those: https://github.com/endojs/endo/issues/2265
+
+Meanwhile, we explicitly export whatever paths are needed by modules that end up in Endo bundles.