diff --git a/contrib/ai-sdk/package.json b/contrib/ai-sdk/package.json
index c3b852b50..4e5cbc9ce 100644
--- a/contrib/ai-sdk/package.json
+++ b/contrib/ai-sdk/package.json
@@ -45,7 +45,7 @@
     "@ai-sdk/provider": "^3.0.0",
     "@modelcontextprotocol/sdk": "^1.25.2",
     "@opentelemetry/api": "^1.9.0",
-    "@opentelemetry/core": "^1.25.1",
+    "@opentelemetry/core": "^2.8.0",
     "@opentelemetry/sdk-node": "^0.52.1",
     "@opentelemetry/semantic-conventions": "^1.25.1",
     "@temporalio/client": "workspace:*",
diff --git a/contrib/interceptors-opentelemetry/package.json b/contrib/interceptors-opentelemetry/package.json
index 7607e48df..77d3426cb 100644
--- a/contrib/interceptors-opentelemetry/package.json
+++ b/contrib/interceptors-opentelemetry/package.json
@@ -18,7 +18,7 @@
   "license": "MIT",
   "dependencies": {
     "@opentelemetry/api": "^1.9.0",
-    "@opentelemetry/core": "^1.25.1",
+    "@opentelemetry/core": "^2.8.0",
     "@opentelemetry/resources": "^1.25.1",
     "@opentelemetry/sdk-trace-base": "^1.25.1",
     "@temporalio/plugin": "workspace:*"
diff --git a/contrib/openai-agents/package.json b/contrib/openai-agents/package.json
index e2ce101bc..c40f74ab3 100644
--- a/contrib/openai-agents/package.json
+++ b/contrib/openai-agents/package.json
@@ -92,7 +92,7 @@
   "devDependencies": {
     "@openai/agents-core": "~0.11.6",
     "@openai/agents-openai": "~0.11.6",
-    "@opentelemetry/core": "^1.25.1",
+    "@opentelemetry/core": "^2.8.0",
     "@opentelemetry/sdk-node": "^0.52.1",
     "@opentelemetry/sdk-trace-base": "^1.25.1",
     "@opentelemetry/semantic-conventions": "^1.25.1",
diff --git a/packages/test/package.json b/packages/test/package.json
index a0a0dbbe9..4720316b4 100644
--- a/packages/test/package.json
+++ b/packages/test/package.json
@@ -28,7 +28,7 @@
     "@grpc/grpc-js": "^1.12.4",
     "@grpc/proto-loader": "^0.7.10",
     "@opentelemetry/api": "^1.9.0",
-    "@opentelemetry/core": "^1.25.1",
+    "@opentelemetry/core": "^2.8.0",
     "@opentelemetry/exporter-trace-otlp-grpc": "^0.52.1",
     "@opentelemetry/sdk-node": "^0.52.1",
     "@opentelemetry/sdk-trace-base": "^1.25.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 943e6f60a..55c68a8ce 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -128,8 +128,8 @@ importers:
         specifier: ^1.9.0
         version: 1.9.0
       '@opentelemetry/core':
-        specifier: ^1.25.1
-        version: 1.25.1(@opentelemetry/api@1.9.0)
+        specifier: ^2.8.0
+        version: 2.8.0(@opentelemetry/api@1.9.0)
       '@opentelemetry/sdk-node':
         specifier: ^0.52.1
         version: 0.52.1(@opentelemetry/api@1.9.0)
@@ -167,8 +167,8 @@ importers:
         specifier: ^1.9.0
         version: 1.9.0
       '@opentelemetry/core':
-        specifier: ^1.25.1
-        version: 1.25.1(@opentelemetry/api@1.9.0)
+        specifier: ^2.8.0
+        version: 2.8.0(@opentelemetry/api@1.9.0)
       '@opentelemetry/resources':
         specifier: ^1.25.1
         version: 1.25.1(@opentelemetry/api@1.9.0)
@@ -259,8 +259,8 @@ importers:
         specifier: ~0.11.6
         version: 0.11.6(zod@4.4.3)
       '@opentelemetry/core':
-        specifier: ^1.25.1
-        version: 1.25.1(@opentelemetry/api@1.9.0)
+        specifier: ^2.8.0
+        version: 2.8.0(@opentelemetry/api@1.9.0)
       '@opentelemetry/sdk-node':
         specifier: ^0.52.1
         version: 0.52.1(@opentelemetry/api@1.9.0)
@@ -687,8 +687,8 @@ importers:
         specifier: ^1.9.0
         version: 1.9.0
       '@opentelemetry/core':
-        specifier: ^1.25.1
-        version: 1.25.1(@opentelemetry/api@1.9.0)
+        specifier: ^2.8.0
+        version: 2.8.0(@opentelemetry/api@1.9.0)
       '@opentelemetry/exporter-trace-otlp-grpc':
         specifier: ^0.52.1
         version: 0.52.1(@opentelemetry/api@1.9.0)
@@ -1506,6 +1506,12 @@ packages:
     peerDependencies:
       '@opentelemetry/api': '>=1.0.0 <1.10.0'
 
+  '@opentelemetry/core@2.8.0':
+    resolution: {integrity: sha512-hd1Lfh8p545nNz+jq1Ejfz+Mn1hyLuxYn1YzTfFNrxr8urEWMNQLPf1Th8kjOH+HxwawCrtgBp8JpBUR4ZSgww==}
+    engines: {node: ^18.19.0 || >=20.6.0}
+    peerDependencies:
+      '@opentelemetry/api': '>=1.0.0 <1.10.0'
+
   '@opentelemetry/exporter-trace-otlp-grpc@0.52.1':
     resolution: {integrity: sha512-pVkSH20crBwMTqB3nIN4jpQKUEoB0Z94drIHpYyEqs7UBr+I0cpYyOR3bqjA/UasQUMROb3GX8ZX4/9cVRqGBQ==}
     engines: {node: '>=14'}
@@ -1606,6 +1612,10 @@ packages:
     resolution: {integrity: sha512-ZDjMJJQRlyk8A1KZFCc+bCbsyrn1wTwdNt56F7twdfUfnHUZUq77/WfONCj8p72NZOyP7pNTdUWSTYC3GTbuuQ==}
     engines: {node: '>=14'}
 
+  '@opentelemetry/semantic-conventions@1.41.1':
+    resolution: {integrity: sha512-/UhIkaZgPutTFmQ7RnIJGgDXZmtEJ7Dvi86xNTFWcnRxVRNk/aotsqDJYeEvDP+FSMB2SdW+pQzNMcWP0rwuNA==}
+    engines: {node: '>=14'}
+
   '@pinojs/redact@0.4.0':
     resolution: {integrity: sha512-k2ENnmBugE/rzQfEcdWHcCY+/FM3VLzH9cYEsbdsoqrvzAKRhUZeRNhAZvB8OitQJ1TBed3yqWtdjzS6wJKBwg==}
 
@@ -5805,6 +5815,11 @@ snapshots:
       '@opentelemetry/api': 1.9.0
       '@opentelemetry/semantic-conventions': 1.25.1
 
+  '@opentelemetry/core@2.8.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/semantic-conventions': 1.41.1
+
   '@opentelemetry/exporter-trace-otlp-grpc@0.52.1(@opentelemetry/api@1.9.0)':
     dependencies:
       '@grpc/grpc-js': 1.12.4
@@ -5946,6 +5961,8 @@ snapshots:
 
   '@opentelemetry/semantic-conventions@1.25.1': {}
 
+  '@opentelemetry/semantic-conventions@1.41.1': {}
+
   '@pinojs/redact@0.4.0': {}
 
   '@pkgjs/parseargs@0.11.0':