diff --git a/.changeset/errorcodes.md b/.changeset/errorcodes.md
new file mode 100644
index 000000000..b6b6f82b3
--- /dev/null
+++ b/.changeset/errorcodes.md
@@ -0,0 +1,5 @@
+---
+"apollo-client-devtools": patch
+---
+
+add error codes for new Apollo Client version
diff --git a/all-clients/errorcodes.json b/all-clients/errorcodes.json
index 28b28e87f..af5bfb507 100644
--- a/all-clients/errorcodes.json
+++ b/all-clients/errorcodes.json
@@ -295,7 +295,8 @@
     "3.12.0-rc.2": "18",
     "3.12.0-rc.3": "18",
     "3.12.0-rc.4": "20",
-    "3.12.0": "20"
+    "3.12.0": "20",
+    "3.12.1": "20"
   },
   "errors": {
     "1": "AQEBAgICAwMDBAMEBQMEBgMEBwQECAQFCQUECgUEBwUECwUEDAYEDQYEDgYGDwYEEAcHBwgIBwgIEQkEEgkEEwkJFAkEFQkEFgoEFwoKGAoLGQoMGgoNGwoOHAoPHQoEHgoEHwoEIAsEIQsEIgwEIw0EJA4EJQ8QJg8RJxAEKBEEKRISKhMTKxQULBUVLBYWLRcXLhgYLxkEMBoEMRoEMhoEMxoENBsZNRwaNhwENx0EOB4bOR4cOh4dOx4ePB4fPR8gPiAhPyAiQCAjQSAkQiEEQyElByEIRCImRSIERiInRyIoRCIpSCIqSSIrSiIESyMETCQETSQE",
diff --git a/all-clients/package-lock.json b/all-clients/package-lock.json
index a7f65cf9d..324fd4395 100644
--- a/all-clients/package-lock.json
+++ b/all-clients/package-lock.json
@@ -42,6 +42,7 @@
         "@apollo-client/3.12.0-rc.2": "npm:@apollo/client@3.12.0-rc.2",
         "@apollo-client/3.12.0-rc.3": "npm:@apollo/client@3.12.0-rc.3",
         "@apollo-client/3.12.0-rc.4": "npm:@apollo/client@3.12.0-rc.4",
+        "@apollo-client/3.12.1": "npm:@apollo/client@3.12.1",
         "@apollo-client/3.8.0": "npm:@apollo/client@3.8.0",
         "@apollo-client/3.8.0-beta.0": "npm:@apollo/client@3.8.0-beta.0",
         "@apollo-client/3.8.0-beta.1": "npm:@apollo/client@3.8.0-beta.1",
@@ -3286,6 +3287,92 @@
         }
       }
     },
+    "node_modules/@apollo-client/3.12.1": {
+      "name": "@apollo/client",
+      "version": "3.12.1",
+      "resolved": "https://registry.npmjs.org/@apollo/client/-/client-3.12.1.tgz",
+      "integrity": "sha512-IHRdFxd2XhHi5p0J6JwyhTsbrK9mXKehE7uDwNO7098vkEQ3FXqUhTY3FmK9zFCWoCoDkME9iWm5hVjJAYoTZQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@graphql-typed-document-node/core": "^3.1.1",
+        "@wry/caches": "^1.0.0",
+        "@wry/equality": "^0.5.6",
+        "@wry/trie": "^0.5.0",
+        "graphql-tag": "^2.12.6",
+        "hoist-non-react-statics": "^3.3.2",
+        "optimism": "^0.18.0",
+        "prop-types": "^15.7.2",
+        "rehackt": "^0.1.0",
+        "response-iterator": "^0.2.6",
+        "symbol-observable": "^4.0.0",
+        "ts-invariant": "^0.10.3",
+        "tslib": "^2.3.0",
+        "zen-observable-ts": "^1.2.5"
+      },
+      "peerDependencies": {
+        "graphql": "^15.0.0 || ^16.0.0",
+        "graphql-ws": "^5.5.5",
+        "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || >=19.0.0-rc <19.0.0",
+        "react-dom": "^16.8.0 || ^17.0.0 || ^18.0.0 || >=19.0.0-rc <19.0.0",
+        "subscriptions-transport-ws": "^0.9.0 || ^0.11.0"
+      },
+      "peerDependenciesMeta": {
+        "graphql-ws": {
+          "optional": true
+        },
+        "react": {
+          "optional": true
+        },
+        "react-dom": {
+          "optional": true
+        },
+        "subscriptions-transport-ws": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@apollo-client/3.12.1/node_modules/@wry/trie": {
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/@wry/trie/-/trie-0.5.0.tgz",
+      "integrity": "sha512-FNoYzHawTMk/6KMQoEG5O4PuioX19UbwdQKF44yw0nLfOypfQdjtfZzo/UIJWAJ23sNIFbD1Ug9lbaDGMwbqQA==",
+      "license": "MIT",
+      "dependencies": {
+        "tslib": "^2.3.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/@apollo-client/3.12.1/node_modules/optimism": {
+      "version": "0.18.1",
+      "resolved": "https://registry.npmjs.org/optimism/-/optimism-0.18.1.tgz",
+      "integrity": "sha512-mLXNwWPa9dgFyDqkNi54sjDyNJ9/fTI6WGBLgnXku1vdKY/jovHfZT5r+aiVeFFLOz+foPNOm5YJ4mqgld2GBQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@wry/caches": "^1.0.0",
+        "@wry/context": "^0.7.0",
+        "@wry/trie": "^0.5.0",
+        "tslib": "^2.3.0"
+      }
+    },
+    "node_modules/@apollo-client/3.12.1/node_modules/rehackt": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/rehackt/-/rehackt-0.1.0.tgz",
+      "integrity": "sha512-7kRDOuLHB87D/JESKxQoRwv4DzbIdwkAGQ7p6QKGdVlY1IZheUnVhlk/4UZlNUVxdAXpyxikE3URsG067ybVzw==",
+      "license": "MIT",
+      "peerDependencies": {
+        "@types/react": "*",
+        "react": "*"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        },
+        "react": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@apollo-client/3.8.0": {
       "name": "@apollo/client",
       "version": "3.8.0",
diff --git a/all-clients/package.json b/all-clients/package.json
index 7c95d5631..72e6336fd 100644
--- a/all-clients/package.json
+++ b/all-clients/package.json
@@ -84,7 +84,8 @@
     "@apollo-client/3.12.0-rc.2": "npm:@apollo/client@3.12.0-rc.2",
     "@apollo-client/3.12.0-rc.3": "npm:@apollo/client@3.12.0-rc.3",
     "@apollo-client/3.12.0-rc.4": "npm:@apollo/client@3.12.0-rc.4",
-    "@apollo-client/3.12.0": "npm:@apollo/client@3.12.0"
+    "@apollo-client/3.12.0": "npm:@apollo/client@3.12.0",
+    "@apollo-client/3.12.1": "npm:@apollo/client@3.12.1"
   },
   "devDependencies": {
     "semver": "7.6.0"