diff --git a/packages/snaps-controllers/package.json b/packages/snaps-controllers/package.json
index 6207569b95..2dbdfb302e 100644
--- a/packages/snaps-controllers/package.json
+++ b/packages/snaps-controllers/package.json
@@ -87,7 +87,7 @@
     "@metamask/object-multiplex": "^2.0.0",
     "@metamask/permission-controller": "^11.0.3",
     "@metamask/phishing-controller": "^12.3.1",
-    "@metamask/post-message-stream": "^8.1.1",
+    "@metamask/post-message-stream": "^9.0.0",
     "@metamask/rpc-errors": "^7.0.2",
     "@metamask/snaps-registry": "^3.2.2",
     "@metamask/snaps-rpc-methods": "workspace:^",
diff --git a/packages/snaps-execution-environments/package.json b/packages/snaps-execution-environments/package.json
index 567c7200c8..7872c56d10 100644
--- a/packages/snaps-execution-environments/package.json
+++ b/packages/snaps-execution-environments/package.json
@@ -66,7 +66,7 @@
   "dependencies": {
     "@metamask/json-rpc-engine": "^10.0.1",
     "@metamask/object-multiplex": "^2.0.0",
-    "@metamask/post-message-stream": "^8.1.1",
+    "@metamask/post-message-stream": "^9.0.0",
     "@metamask/providers": "^18.1.1",
     "@metamask/rpc-errors": "^7.0.2",
     "@metamask/snaps-sdk": "workspace:^",
diff --git a/packages/snaps-utils/package.json b/packages/snaps-utils/package.json
index 56201aad14..a51b8f2cba 100644
--- a/packages/snaps-utils/package.json
+++ b/packages/snaps-utils/package.json
@@ -110,7 +110,7 @@
     "@metamask/eslint-config-jest": "^12.1.0",
     "@metamask/eslint-config-nodejs": "^12.1.0",
     "@metamask/eslint-config-typescript": "^12.1.0",
-    "@metamask/post-message-stream": "^8.1.1",
+    "@metamask/post-message-stream": "^9.0.0",
     "@swc/core": "1.3.78",
     "@swc/jest": "^0.2.26",
     "@ts-bridge/cli": "^0.6.1",
diff --git a/yarn.lock b/yarn.lock
index 7337bb7e9e..a06518ae2e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5337,13 +5337,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@metamask/post-message-stream@npm:^8.1.1":
-  version: 8.1.1
-  resolution: "@metamask/post-message-stream@npm:8.1.1"
+"@metamask/post-message-stream@npm:^9.0.0":
+  version: 9.0.0
+  resolution: "@metamask/post-message-stream@npm:9.0.0"
   dependencies:
-    "@metamask/utils": "npm:^9.0.0"
+    "@metamask/utils": "npm:^11.0.1"
     readable-stream: "npm:3.6.2"
-  checksum: 10/8218d321abe734522aefaf6b44e4203966c3feaf83e2de6e68eef9dbe92b7fb47fe7fd82eae362147b1d741cc58d78bcc95d8bf02058e260ad2fb978104c96cf
+  checksum: 10/5da711d3274e724452322939a5a77c60ed1d7ed73cdaa62e95c16debc443804d5a16de116dce742e05b3fbfa962e009dfeafc3a12a66f20e163617567f2cace5
   languageName: node
   linkType: hard
 
@@ -5722,7 +5722,7 @@ __metadata:
     "@metamask/object-multiplex": "npm:^2.0.0"
     "@metamask/permission-controller": "npm:^11.0.3"
     "@metamask/phishing-controller": "npm:^12.3.1"
-    "@metamask/post-message-stream": "npm:^8.1.1"
+    "@metamask/post-message-stream": "npm:^9.0.0"
     "@metamask/rpc-errors": "npm:^7.0.2"
     "@metamask/snaps-registry": "npm:^3.2.2"
     "@metamask/snaps-rpc-methods": "workspace:^"
@@ -5819,7 +5819,7 @@ __metadata:
     "@metamask/eslint-config-typescript": "npm:^12.1.0"
     "@metamask/json-rpc-engine": "npm:^10.0.1"
     "@metamask/object-multiplex": "npm:^2.0.0"
-    "@metamask/post-message-stream": "npm:^8.1.1"
+    "@metamask/post-message-stream": "npm:^9.0.0"
     "@metamask/providers": "npm:^18.1.1"
     "@metamask/rpc-errors": "npm:^7.0.2"
     "@metamask/snaps-sdk": "workspace:^"
@@ -6255,7 +6255,7 @@ __metadata:
     "@metamask/eslint-config-typescript": "npm:^12.1.0"
     "@metamask/key-tree": "npm:^10.0.1"
     "@metamask/permission-controller": "npm:^11.0.3"
-    "@metamask/post-message-stream": "npm:^8.1.1"
+    "@metamask/post-message-stream": "npm:^9.0.0"
     "@metamask/rpc-errors": "npm:^7.0.2"
     "@metamask/slip44": "npm:^4.1.0"
     "@metamask/snaps-registry": "npm:^3.2.2"