diff --git a/package-lock.json b/package-lock.json
index fc11f5f5e..ac2b591f8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -39,7 +39,7 @@
         "web3-validator": "^2.0.6"
       },
       "devDependencies": {
-        "@polkadot/typegen": "^12.0.1",
+        "@polkadot/typegen": "^12.1.1",
         "@subsquid/substrate-metadata-explorer": "^3.1.2",
         "@subsquid/substrate-typegen": "^8.0.2",
         "@subsquid/typeorm-codegen": "^2.0.1",
@@ -2593,22 +2593,22 @@
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-      "resolved": "https://registry.npmjs.org/@polkadot/api/-/api-12.0.1.tgz",
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+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/api/-/api-12.1.1.tgz",
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-        "@polkadot/api-base": "12.0.1",
-        "@polkadot/api-derive": "12.0.1",
+        "@polkadot/api-augment": "12.1.1",
+        "@polkadot/api-base": "12.1.1",
+        "@polkadot/api-derive": "12.1.1",
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-        "@polkadot/rpc-augment": "12.0.1",
-        "@polkadot/rpc-core": "12.0.1",
-        "@polkadot/rpc-provider": "12.0.1",
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-        "@polkadot/types-augment": "12.0.1",
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-        "@polkadot/types-create": "12.0.1",
-        "@polkadot/types-known": "12.0.1",
+        "@polkadot/rpc-augment": "12.1.1",
+        "@polkadot/rpc-core": "12.1.1",
+        "@polkadot/rpc-provider": "12.1.1",
+        "@polkadot/types": "12.1.1",
+        "@polkadot/types-augment": "12.1.1",
+        "@polkadot/types-codec": "12.1.1",
+        "@polkadot/types-create": "12.1.1",
+        "@polkadot/types-known": "12.1.1",
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@@ -2620,15 +2620,15 @@
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-      "resolved": "https://registry.npmjs.org/@polkadot/api-augment/-/api-augment-12.0.1.tgz",
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-        "@polkadot/rpc-augment": "12.0.1",
-        "@polkadot/types": "12.0.1",
-        "@polkadot/types-augment": "12.0.1",
-        "@polkadot/types-codec": "12.0.1",
+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/api-augment/-/api-augment-12.1.1.tgz",
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+      "dependencies": {
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+        "@polkadot/rpc-augment": "12.1.1",
+        "@polkadot/types": "12.1.1",
+        "@polkadot/types-augment": "12.1.1",
+        "@polkadot/types-codec": "12.1.1",
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@@ -2637,12 +2637,12 @@
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-      "resolved": "https://registry.npmjs.org/@polkadot/api-base/-/api-base-12.0.1.tgz",
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+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/api-base/-/api-base-12.1.1.tgz",
+      "integrity": "sha512-/zLnekv5uFnjzYWhjUf6m0WOJorA0Qm/CWg7z6V+INnacDmVD+WIgYW+XLka90KXpW92sN5ycZEdcQGKBxSJOg==",
       "dependencies": {
-        "@polkadot/rpc-core": "12.0.1",
-        "@polkadot/types": "12.0.1",
+        "@polkadot/rpc-core": "12.1.1",
+        "@polkadot/types": "12.1.1",
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@@ -2652,16 +2652,16 @@
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-      "resolved": "https://registry.npmjs.org/@polkadot/api-derive/-/api-derive-12.0.1.tgz",
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-        "@polkadot/api-augment": "12.0.1",
-        "@polkadot/api-base": "12.0.1",
-        "@polkadot/rpc-core": "12.0.1",
-        "@polkadot/types": "12.0.1",
-        "@polkadot/types-codec": "12.0.1",
+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/api-derive/-/api-derive-12.1.1.tgz",
+      "integrity": "sha512-VMwHcQY8gU/fhwgRICs9/EwTZVMSWW9Gf1ktwsWQmNM1RnrR6oN4/hvzsQor4Be/mC93w2f8bX/71QVmOgL5NA==",
+      "dependencies": {
+        "@polkadot/api": "12.1.1",
+        "@polkadot/api-augment": "12.1.1",
+        "@polkadot/api-base": "12.1.1",
+        "@polkadot/rpc-core": "12.1.1",
+        "@polkadot/types": "12.1.1",
+        "@polkadot/types-codec": "12.1.1",
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@@ -2702,13 +2702,13 @@
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-      "resolved": "https://registry.npmjs.org/@polkadot/rpc-augment/-/rpc-augment-12.0.1.tgz",
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+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/rpc-augment/-/rpc-augment-12.1.1.tgz",
+      "integrity": "sha512-oDPn070l94pppXbuVk75BVsYgupdV8ndmslnUKWpPlfOeAU5SaBu4jMkj3eAi3VH0ersUpmlp1UuYN612//h8w==",
       "dependencies": {
-        "@polkadot/rpc-core": "12.0.1",
-        "@polkadot/types": "12.0.1",
-        "@polkadot/types-codec": "12.0.1",
+        "@polkadot/rpc-core": "12.1.1",
+        "@polkadot/types": "12.1.1",
+        "@polkadot/types-codec": "12.1.1",
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@@ -2717,13 +2717,13 @@
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-      "resolved": "https://registry.npmjs.org/@polkadot/rpc-core/-/rpc-core-12.0.1.tgz",
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+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/rpc-core/-/rpc-core-12.1.1.tgz",
+      "integrity": "sha512-NB4BZo9RdAZPBfZ11NoujB8+SDkDgvlrSiiv9FPMhfvTJo0Sr5FAq0Wd2aSC4D/6qbt5e89CHOW+0gBEm9d6dw==",
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-        "@polkadot/rpc-provider": "12.0.1",
-        "@polkadot/types": "12.0.1",
+        "@polkadot/rpc-augment": "12.1.1",
+        "@polkadot/rpc-provider": "12.1.1",
+        "@polkadot/types": "12.1.1",
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@@ -2733,13 +2733,13 @@
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     "node_modules/@polkadot/rpc-provider": {
-      "version": "12.0.1",
-      "resolved": "https://registry.npmjs.org/@polkadot/rpc-provider/-/rpc-provider-12.0.1.tgz",
-      "integrity": "sha512-3LyoGIl3lfDFVuajVZMvB+rVh5s2+PujdmHT4GFqH0XZm9tMBNzIT4kdC7VV5Ra728C6c6j1GTNJ0ARvxEPbww==",
+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/rpc-provider/-/rpc-provider-12.1.1.tgz",
+      "integrity": "sha512-nDr0Qb5sIzTTx6qmgr9ibNcQs/VDoPzZ+49kcltf0A6BdSytGy532Yhf2A158aD41324V9YPAzxVRLxZyJzhkw==",
       "dependencies": {
         "@polkadot/keyring": "^12.6.2",
-        "@polkadot/types": "12.0.1",
-        "@polkadot/types-support": "12.0.1",
+        "@polkadot/types": "12.1.1",
+        "@polkadot/types-support": "12.1.1",
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@@ -2758,20 +2758,20 @@
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     "node_modules/@polkadot/typegen": {
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-      "resolved": "https://registry.npmjs.org/@polkadot/typegen/-/typegen-12.0.1.tgz",
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-        "@polkadot/api-augment": "12.0.1",
-        "@polkadot/rpc-augment": "12.0.1",
-        "@polkadot/rpc-provider": "12.0.1",
-        "@polkadot/types": "12.0.1",
-        "@polkadot/types-augment": "12.0.1",
-        "@polkadot/types-codec": "12.0.1",
-        "@polkadot/types-create": "12.0.1",
-        "@polkadot/types-support": "12.0.1",
+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/typegen/-/typegen-12.1.1.tgz",
+      "integrity": "sha512-I4a1VR4fhNEvDxTktn3COr67bQ+0xMeHkpOzivDtgQ6rBd78BZniHBfMji298PHdX9LuRxdxqSOhf+lN5k5hvQ==",
+      "dev": true,
+      "dependencies": {
+        "@polkadot/api": "12.1.1",
+        "@polkadot/api-augment": "12.1.1",
+        "@polkadot/rpc-augment": "12.1.1",
+        "@polkadot/rpc-provider": "12.1.1",
+        "@polkadot/types": "12.1.1",
+        "@polkadot/types-augment": "12.1.1",
+        "@polkadot/types-codec": "12.1.1",
+        "@polkadot/types-create": "12.1.1",
+        "@polkadot/types-support": "12.1.1",
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@@ -2791,14 +2791,14 @@
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-      "resolved": "https://registry.npmjs.org/@polkadot/types/-/types-12.0.1.tgz",
-      "integrity": "sha512-4R3hwlMMThdF43DmbWnZTh2nQ1VwBJxKNx5mr7Pq8FereepW62W+1TkwcdekPtPZ+PmcbjmKxzt7JNmiXxjf+w==",
+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/types/-/types-12.1.1.tgz",
+      "integrity": "sha512-+b8v7ORjL20r6VvdWL/fPTHmDXtfAfqkQQxBB6exxOhqrnJfnhAYQjJomKcyj1VMTQiyyR9FBAc7vVvTEFX2ew==",
       "dependencies": {
         "@polkadot/keyring": "^12.6.2",
-        "@polkadot/types-augment": "12.0.1",
-        "@polkadot/types-codec": "12.0.1",
-        "@polkadot/types-create": "12.0.1",
+        "@polkadot/types-augment": "12.1.1",
+        "@polkadot/types-codec": "12.1.1",
+        "@polkadot/types-create": "12.1.1",
         "@polkadot/util": "^12.6.2",
         "@polkadot/util-crypto": "^12.6.2",
         "rxjs": "^7.8.1",
@@ -2809,12 +2809,12 @@
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     "node_modules/@polkadot/types-augment": {
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-      "resolved": "https://registry.npmjs.org/@polkadot/types-augment/-/types-augment-12.0.1.tgz",
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+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/types-augment/-/types-augment-12.1.1.tgz",
+      "integrity": "sha512-HdzjaXapcmNAdT6TWJOuv124PTKbAf5+5JldQ7oPZFaCEhaOTazZYiZ27nqLaj0l4rG7wWzFMiGqjbHwAvtmlg==",
       "dependencies": {
-        "@polkadot/types": "12.0.1",
-        "@polkadot/types-codec": "12.0.1",
+        "@polkadot/types": "12.1.1",
+        "@polkadot/types-codec": "12.1.1",
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@@ -2823,9 +2823,9 @@
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     "node_modules/@polkadot/types-codec": {
-      "version": "12.0.1",
-      "resolved": "https://registry.npmjs.org/@polkadot/types-codec/-/types-codec-12.0.1.tgz",
-      "integrity": "sha512-yF4ZOUlxzTMYwWw7CrXyehhQQhXnaojATTPbIDo3PRHKHAiZes1MXR6qHaBU7p/S6EaUPNOKBQmopSVYN+zUVg==",
+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/types-codec/-/types-codec-12.1.1.tgz",
+      "integrity": "sha512-Ob3nFptHT4dDvGc/3l4dBXmvsI3wDWS2oCOxACA+hYWufnlTIQ4M4sHI4kSBQvDoEmaFt8P2Be4SmtyT0VSd1w==",
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         "@polkadot/x-bigint": "^12.6.2",
@@ -2836,11 +2836,11 @@
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     "node_modules/@polkadot/types-create": {
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-      "resolved": "https://registry.npmjs.org/@polkadot/types-create/-/types-create-12.0.1.tgz",
-      "integrity": "sha512-zPzjRx+AjZk6F5VeAZnEx5ZF5cl0zngp3Ez0HbkM+5Jhh2d+j0dQkfNpf6h26prMTjYItsXMrr1xxWv1GgcFjg==",
+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/types-create/-/types-create-12.1.1.tgz",
+      "integrity": "sha512-K/I4vCnmI7IbtQeURiRMONDqesIVcZp16KEduBcbJm/RWDj0D3mr71066Yr8OhrhteLvULJpViy7EK4ynPvmSw==",
       "dependencies": {
-        "@polkadot/types-codec": "12.0.1",
+        "@polkadot/types-codec": "12.1.1",
         "@polkadot/util": "^12.6.2",
         "tslib": "^2.6.2"
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@@ -2849,14 +2849,14 @@
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-      "resolved": "https://registry.npmjs.org/@polkadot/types-known/-/types-known-12.0.1.tgz",
-      "integrity": "sha512-8VVSy9MthWNqzCQMPLR02GlJhYb4H7SlAk5/9OdAAuoA86svFItQTaKyfUGC26I3uaKtS3/8RgPo3SihJgPHEQ==",
+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/types-known/-/types-known-12.1.1.tgz",
+      "integrity": "sha512-4YxY7tB+BVX6k3ubrToYKyh2Jb4QvoLvzwNSGSjyj0RGwiQCu8anFGIzYdaUJ2iQlhLFb6P4AZWykVvhrXGmqg==",
       "dependencies": {
         "@polkadot/networks": "^12.6.2",
-        "@polkadot/types": "12.0.1",
-        "@polkadot/types-codec": "12.0.1",
-        "@polkadot/types-create": "12.0.1",
+        "@polkadot/types": "12.1.1",
+        "@polkadot/types-codec": "12.1.1",
+        "@polkadot/types-create": "12.1.1",
         "@polkadot/util": "^12.6.2",
         "tslib": "^2.6.2"
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@@ -2865,9 +2865,9 @@
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     "node_modules/@polkadot/types-support": {
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-      "resolved": "https://registry.npmjs.org/@polkadot/types-support/-/types-support-12.0.1.tgz",
-      "integrity": "sha512-5Y5rTmgG0XSPIQR32+fdtvhU+VzahCs+vGnU9yuvT570aLHVqu0nNHRQa/uOtpLcHwgjZPr3ljOgAo0ViaL1UA==",
+      "version": "12.1.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/types-support/-/types-support-12.1.1.tgz",
+      "integrity": "sha512-mLXrbj0maKFWqV1+4QRzaNnZyV/rAQW0XSrIzfIZn//zSRSIUaXaVAZ62uzgdmzXXFH2qD3hpNlmvmjcEMm2Qg==",
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@@ -4625,6 +4625,7 @@
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+      "deprecated": "versions below 1.x are no longer maintained",
       "optional": true,
       "dependencies": {
         "@substrate/connect-extension-protocol": "^2.0.0",
@@ -4640,9 +4641,9 @@
       "optional": true
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-      "version": "1.1.5",
-      "resolved": "https://registry.npmjs.org/@substrate/connect-known-chains/-/connect-known-chains-1.1.5.tgz",
-      "integrity": "sha512-GCdDMs5q9xDYyP/KEwrlWMdqv8OIPjuVMZvNowvUrvEFo5d+x+VqfRPzyl/RbV+snRQVWTTacRydE7GqyjCYPQ==",
+      "version": "1.1.8",
+      "resolved": "https://registry.npmjs.org/@substrate/connect-known-chains/-/connect-known-chains-1.1.8.tgz",
+      "integrity": "sha512-W0Cpnk//LoMTu5BGDCRRg5NHFR2aZ9OJtLGSgRyq1RP39dQGpoVZIgNC6z+SWRzlmOz3gIgkUCwGvOKVt2BabA==",
       "optional": true
     },
     "node_modules/@substrate/light-client-extension-helpers": {
diff --git a/package.json b/package.json
index d5a275967..193fe9751 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "web3-validator": "^2.0.6"
   },
   "devDependencies": {
-    "@polkadot/typegen": "^12.0.1",
+    "@polkadot/typegen": "^12.1.1",
     "@subsquid/substrate-metadata-explorer": "^3.1.2",
     "@subsquid/substrate-typegen": "^8.0.2",
     "@subsquid/typeorm-codegen": "^2.0.1",