diff --git a/solidity/package-lock.json b/solidity/package-lock.json
index 88f580854..757969297 100644
--- a/solidity/package-lock.json
+++ b/solidity/package-lock.json
@@ -4761,11 +4761,12 @@
       }
     },
     "@keep-network/sortition-pools": {
-      "version": "1.2.0-dev.1",
-      "resolved": "https://registry.npmjs.org/@keep-network/sortition-pools/-/sortition-pools-1.2.0-dev.1.tgz",
-      "integrity": "sha512-CaOsvxNWHgXRFwPThDn3C/LiCwq9pL8ICLXXkysRSLw1Hx69wLnToaXYuwyXeIEy5pGqe5+288DBIqvJ3T4+jA==",
+      "version": "2.0.0-dev.0",
+      "resolved": "https://registry.npmjs.org/@keep-network/sortition-pools/-/sortition-pools-2.0.0-dev.0.tgz",
+      "integrity": "sha512-zOyIQ2g5n0wCFlyKktyrGxNAgMGw9KgGYOEz1e93+n+Hs/3wl2olbW6xI5ZJ4lTETkBq3gO+KtkQysHc8rglBg==",
       "requires": {
-        "@openzeppelin/contracts": "^2.4.0"
+        "@openzeppelin/contracts": "^4.3.2",
+        "@thesis/solidity-contracts": "github:thesis/solidity-contracts#4985bcf"
       }
     },
     "@ledgerhq/devices": {
@@ -4949,9 +4950,9 @@
       }
     },
     "@openzeppelin/contracts": {
-      "version": "2.5.1",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-2.5.1.tgz",
-      "integrity": "sha512-qIy6tLx8rtybEsIOAlrM4J/85s2q2nPkDqj/Rx46VakBZ0LwtFhXIVub96LXHczQX0vaqmAueDqNPXtbSXSaYQ=="
+      "version": "4.7.3",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.7.3.tgz",
+      "integrity": "sha512-dGRS0agJzu8ybo44pCIf3xBaPQN/65AIXNgK8+4gzKd5kbvlqyxryUYVLJv7fK98Seyd2hDZzVEHSWAh0Bt1Yw=="
     },
     "@openzeppelin/test-environment": {
       "version": "0.1.9",
@@ -6785,6 +6786,13 @@
         "google-protobuf": "^3.13.0"
       }
     },
+    "@thesis/solidity-contracts": {
+      "version": "github:thesis/solidity-contracts#4985bcfc28e36eed9838993b16710e1b500f9e85",
+      "from": "github:thesis/solidity-contracts#4985bcf",
+      "requires": {
+        "@openzeppelin/contracts": "^4.1.0"
+      }
+    },
     "@truffle/abi-utils": {
       "version": "0.1.6",
       "resolved": "https://registry.npmjs.org/@truffle/abi-utils/-/abi-utils-0.1.6.tgz",
diff --git a/solidity/package.json b/solidity/package.json
index 38acd9dc5..7a3f903c7 100644
--- a/solidity/package.json
+++ b/solidity/package.json
@@ -29,7 +29,7 @@
   "homepage": "https://github.com/keep-network/keep-ecdsa",
   "dependencies": {
     "@keep-network/keep-core": ">1.8.0-dev <1.8.0-pre",
-    "@keep-network/sortition-pools": "1.2.0-dev.1",
+    "@keep-network/sortition-pools": "2.0.0-dev.0",
     "@openzeppelin/upgrades": "^2.7.2",
     "openzeppelin-solidity": "2.3.0"
   },