diff --git a/.github/workflows/contracts-ecdsa.yml b/.github/workflows/contracts-ecdsa.yml
index b3cd549f5a..484bd37c85 100644
--- a/.github/workflows/contracts-ecdsa.yml
+++ b/.github/workflows/contracts-ecdsa.yml
@@ -27,8 +27,8 @@ on:
   workflow_dispatch:
     inputs:
       environment:
-        description: "Environment (network) for workflow execution, e.g. `goerli`"
-        required: false
+        description: "Environment (network) for workflow execution, e.g. `sepolia`"
+        required: true
       upstream_builds:
         description: "Upstream builds"
         required: false
@@ -252,8 +252,15 @@ jobs:
 
       - name: Deploy contracts
         env:
-          CHAIN_API_URL: ${{ secrets.GOERLI_ETH_HOSTNAME_HTTP }}
-          ACCOUNTS_PRIVATE_KEYS: ${{ secrets.GOERLI_ETH_CONTRACT_OWNER_PRIVATE_KEY }}
+          # Using fake ternary expression to decide which credentials to use,
+          # depending on chosen environment. Note: if `GOERLI_ETH_HOSTNAME_HTTP`
+          # is empty, the expression will be evaluated to
+          # `SEPOLIA_ETH_HOSTNAME_HTTP`'s value.
+          CHAIN_API_URL: |
+            ${{ inputs.github.event.inputs.environment == 'goerli'
+              && secrets.GOERLI_ETH_HOSTNAME_HTTP
+              || secrets.SEPOLIA_ETH_HOSTNAME_HTTP }}
+          ACCOUNTS_PRIVATE_KEYS: ${{ secrets.TESTNET_ETH_CONTRACT_OWNER_PRIVATE_KEY }}
           ETHERSCAN_API_KEY: ${{ secrets.ETHERSCAN_API_KEY }}
         run: yarn deploy --network ${{ github.event.inputs.environment }}
 
@@ -340,8 +347,15 @@ jobs:
       
       - name: Deploy contracts
         env:
-          CHAIN_API_URL: ${{ secrets.GOERLI_ETH_HOSTNAME_HTTP }}
-          ACCOUNTS_PRIVATE_KEYS: ${{ secrets.DAPP_DEV_GOERLI_ETH_CONTRACT_OWNER_PRIVATE_KEY }}
+          # Using fake ternary expression to decide which credentials to use,
+          # depending on chosen environment. Note: if `GOERLI_ETH_HOSTNAME_HTTP`
+          # is empty, the expression will be evaluated to
+          # `SEPOLIA_ETH_HOSTNAME_HTTP`'s value.
+          CHAIN_API_URL: |
+            ${{ inputs.github.event.inputs.environment == 'goerli'
+              && secrets.GOERLI_ETH_HOSTNAME_HTTP
+              || secrets.SEPOLIA_ETH_HOSTNAME_HTTP }}
+          ACCOUNTS_PRIVATE_KEYS: ${{ secrets.DAPP_DEV_TESTNET_ETH_CONTRACT_OWNER_PRIVATE_KEY }}
           ETHERSCAN_API_KEY: ${{ secrets.ETHERSCAN_API_KEY }}
         run: yarn deploy --network ${{ github.event.inputs.environment }}
 
diff --git a/.github/workflows/contracts-random-beacon.yml b/.github/workflows/contracts-random-beacon.yml
index 17cf44b937..12e6007283 100644
--- a/.github/workflows/contracts-random-beacon.yml
+++ b/.github/workflows/contracts-random-beacon.yml
@@ -27,8 +27,8 @@ on:
   workflow_dispatch:
     inputs:
       environment:
-        description: "Environment (network) for workflow execution, e.g. `goerli`"
-        required: false
+        description: "Environment (network) for workflow execution, e.g. `sepolia`"
+        required: true
       upstream_builds:
         description: "Upstream builds"
         required: false
@@ -248,8 +248,15 @@ jobs:
 
       - name: Deploy contracts
         env:
-          CHAIN_API_URL: ${{ secrets.GOERLI_ETH_HOSTNAME_HTTP }}
-          ACCOUNTS_PRIVATE_KEYS: ${{ secrets.GOERLI_ETH_CONTRACT_OWNER_PRIVATE_KEY }}
+          # Using fake ternary expression to decide which credentials to use,
+          # depending on chosen environment. Note: if `GOERLI_ETH_HOSTNAME_HTTP`
+          # is empty, the expression will be evaluated to
+          # `SEPOLIA_ETH_HOSTNAME_HTTP`'s value.
+          CHAIN_API_URL: |
+            ${{ inputs.github.event.inputs.environment == 'goerli'
+              && secrets.GOERLI_ETH_HOSTNAME_HTTP
+              || secrets.SEPOLIA_ETH_HOSTNAME_HTTP }}
+          ACCOUNTS_PRIVATE_KEYS: ${{ secrets.TESTNET_ETH_CONTRACT_OWNER_PRIVATE_KEY }}
           ETHERSCAN_API_KEY: ${{ secrets.ETHERSCAN_API_KEY }}
         run: yarn deploy --network ${{ github.event.inputs.environment }}
 
@@ -334,8 +341,15 @@ jobs:
       
       - name: Deploy contracts
         env:
-          CHAIN_API_URL: ${{ secrets.GOERLI_ETH_HOSTNAME_HTTP }}
-          ACCOUNTS_PRIVATE_KEYS: ${{ secrets.DAPP_DEV_GOERLI_ETH_CONTRACT_OWNER_PRIVATE_KEY }}
+          # Using fake ternary expression to decide which credentials to use,
+          # depending on chosen environment. Note: if `GOERLI_ETH_HOSTNAME_HTTP`
+          # is empty, the expression will be evaluated to
+          # `SEPOLIA_ETH_HOSTNAME_HTTP`'s value.
+          CHAIN_API_URL: |
+            ${{ inputs.github.event.inputs.environment == 'goerli'
+              && secrets.GOERLI_ETH_HOSTNAME_HTTP
+              || secrets.SEPOLIA_ETH_HOSTNAME_HTTP }}
+          ACCOUNTS_PRIVATE_KEYS: ${{ secrets.DAPP_DEV_TESTNET_ETH_CONTRACT_OWNER_PRIVATE_KEY }}
           ETHERSCAN_API_KEY: ${{ secrets.ETHERSCAN_API_KEY }}
         run: yarn deploy --network ${{ github.event.inputs.environment }}
 
diff --git a/solidity/ecdsa/deploy/09_deploy_wallet_registry_governance.ts b/solidity/ecdsa/deploy/09_deploy_wallet_registry_governance.ts
index 90ebc50acb..965e04ad0a 100644
--- a/solidity/ecdsa/deploy/09_deploy_wallet_registry_governance.ts
+++ b/solidity/ecdsa/deploy/09_deploy_wallet_registry_governance.ts
@@ -7,8 +7,11 @@ const func: DeployFunction = async (hre: HardhatRuntimeEnvironment) => {
 
   const WalletRegistry = await deployments.get("WalletRegistry")
 
-  // 60 seconds for Goerli. 1 week otherwise.
-  const GOVERNANCE_DELAY = hre.network.name === "goerli" ? 60 : 604800
+  // 60 seconds for Goerli/Sepolia. 1 week otherwise.
+  const GOVERNANCE_DELAY =
+    hre.network.name === "goerli" || hre.network.name === "sepolia"
+      ? 60
+      : 604800
 
   const WalletRegistryGovernance = await deployments.deploy(
     "WalletRegistryGovernance",
diff --git a/solidity/ecdsa/hardhat.config.ts b/solidity/ecdsa/hardhat.config.ts
index 52bad239db..b9e160bf6e 100644
--- a/solidity/ecdsa/hardhat.config.ts
+++ b/solidity/ecdsa/hardhat.config.ts
@@ -121,6 +121,14 @@ const config: HardhatUserConfig = {
         : undefined,
       tags: ["etherscan", "tenderly", "useRandomBeaconChaosnet"],
     },
+    sepolia: {
+      url: process.env.CHAIN_API_URL || "",
+      chainId: 11155111,
+      accounts: process.env.ACCOUNTS_PRIVATE_KEYS
+        ? process.env.ACCOUNTS_PRIVATE_KEYS.split(",")
+        : undefined,
+      tags: ["etherscan", "tenderly", "useRandomBeaconChaosnet"],
+    },
     mainnet: {
       url: process.env.CHAIN_API_URL || "",
       chainId: 1,
@@ -143,21 +151,25 @@ const config: HardhatUserConfig = {
     deployer: {
       default: 1, // take the second account
       goerli: 0,
+      sepolia: 0,
       mainnet: 0, // "0x123694886DBf5Ac94DDA07135349534536D14cAf"
     },
     governance: {
       default: 2,
       goerli: 0,
+      sepolia: 0,
       mainnet: "0x9f6e831c8f8939dc0c830c6e492e7cef4f9c2f5f", // Threshold Council
     },
     chaosnetOwner: {
       default: 3,
       goerli: 0,
+      sepolia: 0,
       mainnet: "0x9f6e831c8f8939dc0c830c6e492e7cef4f9c2f5f", // Threshold Council
     },
     esdm: {
       default: 4,
       goerli: 0,
+      sepolia: 0,
       mainnet: "0x9f6e831c8f8939dc0c830c6e492e7cef4f9c2f5f", // Threshold Council
     },
   },
@@ -192,6 +204,10 @@ const config: HardhatUserConfig = {
         "node_modules/@threshold-network/solidity-contracts/artifacts",
         "node_modules/@keep-network/random-beacon/artifacts",
       ],
+      sepolia: [
+        "node_modules/@threshold-network/solidity-contracts/artifacts",
+        "node_modules/@keep-network/random-beacon/artifacts",
+      ],
       mainnet: ["./external/mainnet"],
     },
   },
diff --git a/solidity/random-beacon/deploy/01_deploy_reimbursement_pool.ts b/solidity/random-beacon/deploy/01_deploy_reimbursement_pool.ts
index 5e1990076f..9832d42288 100644
--- a/solidity/random-beacon/deploy/01_deploy_reimbursement_pool.ts
+++ b/solidity/random-beacon/deploy/01_deploy_reimbursement_pool.ts
@@ -16,6 +16,11 @@ const func: DeployFunction = async (hre: HardhatRuntimeEnvironment) => {
   })
 
   if (hre.network.tags.etherscan) {
+    await hre.ethers.provider.waitForTransaction(
+      ReimbursementPool.transactionHash,
+      2,
+      300000
+    )
     await helpers.etherscan.verify(ReimbursementPool)
   }
 
diff --git a/solidity/random-beacon/deploy/02_deploy_beacon_sortition_pool.ts b/solidity/random-beacon/deploy/02_deploy_beacon_sortition_pool.ts
index 7b8dbcce0c..12ce503e42 100644
--- a/solidity/random-beacon/deploy/02_deploy_beacon_sortition_pool.ts
+++ b/solidity/random-beacon/deploy/02_deploy_beacon_sortition_pool.ts
@@ -27,6 +27,11 @@ const func: DeployFunction = async (hre: HardhatRuntimeEnvironment) => {
   )
 
   if (hre.network.tags.etherscan) {
+    await hre.ethers.provider.waitForTransaction(
+      BeaconSortitionPool.transactionHash,
+      2,
+      300000
+    )
     await helpers.etherscan.verify(BeaconSortitionPool)
   }
 
diff --git a/solidity/random-beacon/deploy/03_deploy_beacon_dkg_validator.ts b/solidity/random-beacon/deploy/03_deploy_beacon_dkg_validator.ts
index 84f69c1f21..ae34ed752a 100644
--- a/solidity/random-beacon/deploy/03_deploy_beacon_dkg_validator.ts
+++ b/solidity/random-beacon/deploy/03_deploy_beacon_dkg_validator.ts
@@ -15,6 +15,11 @@ const func: DeployFunction = async (hre: HardhatRuntimeEnvironment) => {
   })
 
   if (hre.network.tags.etherscan) {
+    await hre.ethers.provider.waitForTransaction(
+      BeaconDkgValidator.transactionHash,
+      2,
+      300000
+    )
     await helpers.etherscan.verify(BeaconDkgValidator)
   }
 
diff --git a/solidity/random-beacon/deploy/04_deploy_random_beacon.ts b/solidity/random-beacon/deploy/04_deploy_random_beacon.ts
index 72b0c85c27..9ff3a57b6f 100644
--- a/solidity/random-beacon/deploy/04_deploy_random_beacon.ts
+++ b/solidity/random-beacon/deploy/04_deploy_random_beacon.ts
@@ -59,6 +59,11 @@ const func: DeployFunction = async (hre: HardhatRuntimeEnvironment) => {
   )
 
   if (hre.network.tags.etherscan) {
+    await hre.ethers.provider.waitForTransaction(
+      RandomBeacon.transactionHash,
+      2,
+      300000
+    )
     await helpers.etherscan.verify(BLS)
     await helpers.etherscan.verify(BeaconAuthorization)
     await helpers.etherscan.verify(BeaconDkg)
diff --git a/solidity/random-beacon/deploy/07_deploy_random_beacon_governance.ts b/solidity/random-beacon/deploy/07_deploy_random_beacon_governance.ts
index 9a5261c115..95e2b41815 100644
--- a/solidity/random-beacon/deploy/07_deploy_random_beacon_governance.ts
+++ b/solidity/random-beacon/deploy/07_deploy_random_beacon_governance.ts
@@ -20,6 +20,11 @@ const func: DeployFunction = async (hre: HardhatRuntimeEnvironment) => {
   )
 
   if (hre.network.tags.etherscan) {
+    await hre.ethers.provider.waitForTransaction(
+      RandomBeaconGovernance.transactionHash,
+      2,
+      300000
+    )
     await helpers.etherscan.verify(RandomBeaconGovernance)
   }
 
diff --git a/solidity/random-beacon/deploy/09_deploy_random_beacon_chaosnet.ts b/solidity/random-beacon/deploy/09_deploy_random_beacon_chaosnet.ts
index 0cf013857e..9828554555 100644
--- a/solidity/random-beacon/deploy/09_deploy_random_beacon_chaosnet.ts
+++ b/solidity/random-beacon/deploy/09_deploy_random_beacon_chaosnet.ts
@@ -19,6 +19,11 @@ const func: DeployFunction = async (hre: HardhatRuntimeEnvironment) => {
   )
 
   if (hre.network.tags.etherscan) {
+    await hre.ethers.provider.waitForTransaction(
+      RandomBeaconChaosnet.transactionHash,
+      2,
+      300000
+    )
     await helpers.etherscan.verify(RandomBeaconChaosnet)
   }
 
diff --git a/solidity/random-beacon/hardhat.config.ts b/solidity/random-beacon/hardhat.config.ts
index a4a4092bfb..020c0ce0d9 100644
--- a/solidity/random-beacon/hardhat.config.ts
+++ b/solidity/random-beacon/hardhat.config.ts
@@ -109,6 +109,14 @@ const config: HardhatUserConfig = {
         : undefined,
       tags: ["etherscan", "tenderly"],
     },
+    sepolia: {
+      url: process.env.CHAIN_API_URL || "",
+      chainId: 11155111,
+      accounts: process.env.ACCOUNTS_PRIVATE_KEYS
+        ? process.env.ACCOUNTS_PRIVATE_KEYS.split(",")
+        : undefined,
+      tags: ["etherscan", "tenderly"],
+    },
     mainnet: {
       url: process.env.CHAIN_API_URL || "",
       chainId: 1,
@@ -131,16 +139,19 @@ const config: HardhatUserConfig = {
     deployer: {
       default: 1,
       goerli: 0,
+      sepolia: 0,
       mainnet: 0, // "0x123694886DBf5Ac94DDA07135349534536D14cAf"
     },
     governance: {
       default: 2,
       goerli: 0,
+      sepolia: 0,
       mainnet: "0x9f6e831c8f8939dc0c830c6e492e7cef4f9c2f5f", // Threshold Council
     },
     chaosnetOwner: {
       default: 3,
       goerli: 0,
+      sepolia: 0,
       mainnet: "0x9f6e831c8f8939dc0c830c6e492e7cef4f9c2f5f", // Threshold Council
     },
   },
@@ -166,6 +177,7 @@ const config: HardhatUserConfig = {
         "node_modules/@threshold-network/solidity-contracts/deployments/development",
       ],
       goerli: ["node_modules/@threshold-network/solidity-contracts/artifacts"],
+      sepolia: ["node_modules/@threshold-network/solidity-contracts/artifacts"],
       mainnet: ["./external/mainnet"],
     },
   },