diff --git a/package-lock.json b/package-lock.json
index 4342b00c..784ab027 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2261,9 +2261,10 @@
       }
     },
     "node_modules/@tanstack/query-core": {
-      "version": "5.62.7",
-      "resolved": "https://registry.npmjs.org/@tanstack/query-core/-/query-core-5.62.7.tgz",
-      "integrity": "sha512-fgpfmwatsrUal6V+8EC2cxZIQVl9xvL7qYa03gsdsCy985UTUlS4N+/3hCzwR0PclYDqisca2AqR1BVgJGpUDA==",
+      "version": "5.66.0",
+      "resolved": "https://registry.npmjs.org/@tanstack/query-core/-/query-core-5.66.0.tgz",
+      "integrity": "sha512-J+JeBtthiKxrpzUu7rfIPDzhscXF2p5zE/hVdrqkACBP8Yu0M96mwJ5m/8cPPYQE9aRNvXztXHlNwIh4FEeMZw==",
+      "dev": true,
       "license": "MIT",
       "funding": {
         "type": "github",
@@ -2313,6 +2314,16 @@
         "react": "^18 || ^19"
       }
     },
+    "node_modules/@tanstack/react-query/node_modules/@tanstack/query-core": {
+      "version": "5.62.7",
+      "resolved": "https://registry.npmjs.org/@tanstack/query-core/-/query-core-5.62.7.tgz",
+      "integrity": "sha512-fgpfmwatsrUal6V+8EC2cxZIQVl9xvL7qYa03gsdsCy985UTUlS4N+/3hCzwR0PclYDqisca2AqR1BVgJGpUDA==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/tannerlinsley"
+      }
+    },
     "node_modules/@testing-library/dom": {
       "version": "10.4.0",
       "resolved": "https://registry.npmjs.org/@testing-library/dom/-/dom-10.4.0.tgz",
@@ -9015,7 +9026,7 @@
         "@bufbuild/protoc-gen-es": "^2.2.1",
         "@connectrpc/connect": "^2.0.0",
         "@connectrpc/connect-web": "^2.0.0",
-        "@tanstack/query-core": "^5.62.7",
+        "@tanstack/query-core": "^5.66.0",
         "test-utils": "*",
         "typescript": "^5.6.3"
       },
diff --git a/packages/connect-query-core/package.json b/packages/connect-query-core/package.json
index 91a20f6e..7f306825 100644
--- a/packages/connect-query-core/package.json
+++ b/packages/connect-query-core/package.json
@@ -39,7 +39,7 @@
     "@connectrpc/connect-web": "^2.0.0",
     "test-utils": "*",
     "typescript": "^5.6.3",
-    "@tanstack/query-core": "^5.62.7"
+    "@tanstack/query-core": "^5.66.0"
   },
   "peerDependencies": {
     "@bufbuild/protobuf": "2.x",