diff --git a/package.json b/package.json
index 07c76818f..831f370de 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
   },
   "devDependencies": {
     "@babel/core": "^7.2.2",
-    "@polkadot/dev": "^0.23.10",
-    "@polkadot/ts": "^0.1.50"
+    "@polkadot/dev": "^0.23.12",
+    "@polkadot/ts": "^0.1.51"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index bdbac4d37..01de7e61f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1293,10 +1293,10 @@
   resolved "https://registry.yarnpkg.com/@nodelib/fs.stat/-/fs.stat-1.1.3.tgz#2b5a3ab3f918cca48a8c754c08168e3f03eba61b"
   integrity sha512-shAmDyaQC4H92APFoIaVDHCx5bStIocgvbwQyxPRrbUY20V1EYTbSDchWbuwlMG3V17cprZhA6+78JfB+3DTPw==
 
-"@polkadot/dev@^0.23.10":
-  version "0.23.10"
-  resolved "https://registry.yarnpkg.com/@polkadot/dev/-/dev-0.23.10.tgz#ab76f12475fd3149cdab819174d5395da33f16d4"
-  integrity sha512-W9l9IygZnWnvm6hjdjY9IWbnrxiZSpFlRKD7bnA4PRKA326TbmtUFye4XOBoNVAA5+W2gGZd8UyGjs0ezfDCaA==
+"@polkadot/dev@^0.23.12":
+  version "0.23.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/dev/-/dev-0.23.12.tgz#327c9d326b7a13604f917ce2b6df2686c6e0a73e"
+  integrity sha512-rXLkaYTWqBl3+60grGeyIJFRjl69U7SJfdLrVY+R8hy4/ki4OjOurXnf13sX+gWtVNNNKMmRn+gg6fQ11E59Ow==
   dependencies:
     "@babel/cli" "^7.2.3"
     "@babel/core" "^7.2.2"
@@ -1333,10 +1333,10 @@
     typedoc-plugin-no-inherit "^1.1.2"
     typescript "^3.2.2"
 
-"@polkadot/ts@^0.1.50":
-  version "0.1.50"
-  resolved "https://registry.yarnpkg.com/@polkadot/ts/-/ts-0.1.50.tgz#29a7982203f34e1b6a1215ddaab4efdc4010a099"
-  integrity sha512-yKRJ7+EKW4rZxuSyAvQvjJsImNBqMsWF1NZTkMSfPsLFC5daC9eFuL6O+DdpvOnIKWbrLu2iLCwC9pzFLe7Low==
+"@polkadot/ts@^0.1.51":
+  version "0.1.51"
+  resolved "https://registry.yarnpkg.com/@polkadot/ts/-/ts-0.1.51.tgz#4ce26923b3d34c026e14081975718b716c988483"
+  integrity sha512-p+uQIZqxtlQGTQoNcd8mED66qfyPA4qy8HmCMpUYDaFHKNpZ7qun0dqSoT0NvUB32KTSQitKhf/N0att8sEdow==
 
 "@types/base-x@*":
   version "3.0.0"