diff --git a/packages/snaps-execution-environments/lavamoat/browserify/iframe/policy.json b/packages/snaps-execution-environments/lavamoat/browserify/iframe/policy.json
index 5f53e91c6f..57d42f826b 100644
--- a/packages/snaps-execution-environments/lavamoat/browserify/iframe/policy.json
+++ b/packages/snaps-execution-environments/lavamoat/browserify/iframe/policy.json
@@ -2,8 +2,14 @@
   "resources": {
     "@metamask/json-rpc-engine": {
       "packages": {
+        "@metamask/json-rpc-engine>@metamask/rpc-errors": true,
         "@metamask/providers>@metamask/safe-event-emitter": true,
-        "@metamask/rpc-errors": true,
+        "@metamask/utils": true
+      }
+    },
+    "@metamask/json-rpc-engine>@metamask/rpc-errors": {
+      "packages": {
+        "@metamask/rpc-errors>fast-safe-stringify": true,
         "@metamask/utils": true
       }
     },
@@ -45,9 +51,9 @@
         "@metamask/json-rpc-engine": true,
         "@metamask/object-multiplex": true,
         "@metamask/providers>@metamask/json-rpc-middleware-stream": true,
+        "@metamask/providers>@metamask/rpc-errors": true,
         "@metamask/providers>@metamask/safe-event-emitter": true,
         "@metamask/providers>is-stream": true,
-        "@metamask/rpc-errors": true,
         "eslint>fast-deep-equal": true,
         "readable-stream": true
       }
@@ -63,6 +69,12 @@
         "readable-stream": true
       }
     },
+    "@metamask/providers>@metamask/rpc-errors": {
+      "packages": {
+        "@metamask/rpc-errors>fast-safe-stringify": true,
+        "@metamask/utils": true
+      }
+    },
     "@metamask/providers>@metamask/safe-event-emitter": {
       "globals": {
         "setTimeout": true
diff --git a/packages/snaps-execution-environments/lavamoat/browserify/node-process/policy.json b/packages/snaps-execution-environments/lavamoat/browserify/node-process/policy.json
index 1c4b1c0425..3c773b9a54 100644
--- a/packages/snaps-execution-environments/lavamoat/browserify/node-process/policy.json
+++ b/packages/snaps-execution-environments/lavamoat/browserify/node-process/policy.json
@@ -2,8 +2,14 @@
   "resources": {
     "@metamask/json-rpc-engine": {
       "packages": {
+        "@metamask/json-rpc-engine>@metamask/rpc-errors": true,
         "@metamask/providers>@metamask/safe-event-emitter": true,
-        "@metamask/rpc-errors": true,
+        "@metamask/utils": true
+      }
+    },
+    "@metamask/json-rpc-engine>@metamask/rpc-errors": {
+      "packages": {
+        "@metamask/rpc-errors>fast-safe-stringify": true,
         "@metamask/utils": true
       }
     },
@@ -52,9 +58,9 @@
         "@metamask/json-rpc-engine": true,
         "@metamask/object-multiplex": true,
         "@metamask/providers>@metamask/json-rpc-middleware-stream": true,
+        "@metamask/providers>@metamask/rpc-errors": true,
         "@metamask/providers>@metamask/safe-event-emitter": true,
         "@metamask/providers>is-stream": true,
-        "@metamask/rpc-errors": true,
         "eslint>fast-deep-equal": true,
         "readable-stream": true
       }
@@ -70,6 +76,12 @@
         "readable-stream": true
       }
     },
+    "@metamask/providers>@metamask/rpc-errors": {
+      "packages": {
+        "@metamask/rpc-errors>fast-safe-stringify": true,
+        "@metamask/utils": true
+      }
+    },
     "@metamask/providers>@metamask/safe-event-emitter": {
       "builtin": {
         "events.EventEmitter": true
diff --git a/packages/snaps-execution-environments/lavamoat/browserify/node-thread/policy.json b/packages/snaps-execution-environments/lavamoat/browserify/node-thread/policy.json
index 1c4b1c0425..3c773b9a54 100644
--- a/packages/snaps-execution-environments/lavamoat/browserify/node-thread/policy.json
+++ b/packages/snaps-execution-environments/lavamoat/browserify/node-thread/policy.json
@@ -2,8 +2,14 @@
   "resources": {
     "@metamask/json-rpc-engine": {
       "packages": {
+        "@metamask/json-rpc-engine>@metamask/rpc-errors": true,
         "@metamask/providers>@metamask/safe-event-emitter": true,
-        "@metamask/rpc-errors": true,
+        "@metamask/utils": true
+      }
+    },
+    "@metamask/json-rpc-engine>@metamask/rpc-errors": {
+      "packages": {
+        "@metamask/rpc-errors>fast-safe-stringify": true,
         "@metamask/utils": true
       }
     },
@@ -52,9 +58,9 @@
         "@metamask/json-rpc-engine": true,
         "@metamask/object-multiplex": true,
         "@metamask/providers>@metamask/json-rpc-middleware-stream": true,
+        "@metamask/providers>@metamask/rpc-errors": true,
         "@metamask/providers>@metamask/safe-event-emitter": true,
         "@metamask/providers>is-stream": true,
-        "@metamask/rpc-errors": true,
         "eslint>fast-deep-equal": true,
         "readable-stream": true
       }
@@ -70,6 +76,12 @@
         "readable-stream": true
       }
     },
+    "@metamask/providers>@metamask/rpc-errors": {
+      "packages": {
+        "@metamask/rpc-errors>fast-safe-stringify": true,
+        "@metamask/utils": true
+      }
+    },
     "@metamask/providers>@metamask/safe-event-emitter": {
       "builtin": {
         "events.EventEmitter": true
diff --git a/packages/snaps-execution-environments/lavamoat/browserify/worker-executor/policy.json b/packages/snaps-execution-environments/lavamoat/browserify/worker-executor/policy.json
index 5f53e91c6f..57d42f826b 100644
--- a/packages/snaps-execution-environments/lavamoat/browserify/worker-executor/policy.json
+++ b/packages/snaps-execution-environments/lavamoat/browserify/worker-executor/policy.json
@@ -2,8 +2,14 @@
   "resources": {
     "@metamask/json-rpc-engine": {
       "packages": {
+        "@metamask/json-rpc-engine>@metamask/rpc-errors": true,
         "@metamask/providers>@metamask/safe-event-emitter": true,
-        "@metamask/rpc-errors": true,
+        "@metamask/utils": true
+      }
+    },
+    "@metamask/json-rpc-engine>@metamask/rpc-errors": {
+      "packages": {
+        "@metamask/rpc-errors>fast-safe-stringify": true,
         "@metamask/utils": true
       }
     },
@@ -45,9 +51,9 @@
         "@metamask/json-rpc-engine": true,
         "@metamask/object-multiplex": true,
         "@metamask/providers>@metamask/json-rpc-middleware-stream": true,
+        "@metamask/providers>@metamask/rpc-errors": true,
         "@metamask/providers>@metamask/safe-event-emitter": true,
         "@metamask/providers>is-stream": true,
-        "@metamask/rpc-errors": true,
         "eslint>fast-deep-equal": true,
         "readable-stream": true
       }
@@ -63,6 +69,12 @@
         "readable-stream": true
       }
     },
+    "@metamask/providers>@metamask/rpc-errors": {
+      "packages": {
+        "@metamask/rpc-errors>fast-safe-stringify": true,
+        "@metamask/utils": true
+      }
+    },
     "@metamask/providers>@metamask/safe-event-emitter": {
       "globals": {
         "setTimeout": true