diff --git a/contracts/Marketplace.sol b/contracts/Marketplace.sol
index cc0e91e..ae01a31 100644
--- a/contracts/Marketplace.sol
+++ b/contracts/Marketplace.sol
@@ -59,8 +59,10 @@ contract Marketplace is Proofs, Validation, StateRetrieval, Endian {
     MarketplaceConfig memory configuration,
     IERC20 token_,
     IGroth16Verifier verifier
-  ) Proofs(configuration.proofs, verifier)
-    Validation(configuration.validation) {
+  )
+    Proofs(configuration.proofs, verifier)
+    Validation(configuration.validation)
+  {
     _token = token_;
 
     require(
diff --git a/contracts/StateRetrieval.sol b/contracts/StateRetrieval.sol
index 3fcf5b9..6c72e0b 100644
--- a/contracts/StateRetrieval.sol
+++ b/contracts/StateRetrieval.sol
@@ -20,7 +20,9 @@ contract StateRetrieval {
     return _slotsPerHost[msg.sender].values().toSlotIds();
   }
 
-  function validationSlots(uint16 groupIdx) public view returns (SlotId[] memory) {
+  function validationSlots(
+    uint16 groupIdx
+  ) public view returns (SlotId[] memory) {
     return _slotsPerValidator[groupIdx].values().toSlotIds();
   }
 
diff --git a/contracts/TestValidation.sol b/contracts/TestValidation.sol
index c10c50a..4d5092a 100644
--- a/contracts/TestValidation.sol
+++ b/contracts/TestValidation.sol
@@ -5,10 +5,7 @@ import "./Validation.sol";
 import "./Requests.sol";
 
 contract TestValidation is Validation {
-
-  constructor(
-    ValidationConfig memory config
-  ) Validation(config) {}  // solhint-disable-line no-empty-blocks
+  constructor(ValidationConfig memory config) Validation(config) {} // solhint-disable-line no-empty-blocks
 
   function getValidatorIndex(SlotId slotId) public view returns (uint16) {
     return _getValidatorIndex(slotId);
diff --git a/contracts/Validation.sol b/contracts/Validation.sol
index 8cf0625..7052651 100644
--- a/contracts/Validation.sol
+++ b/contracts/Validation.sol
@@ -19,9 +19,7 @@ abstract contract Validation {
    * @param config network-level validator configuration used to determine
      number of SlotIds per validator.
    */
-  constructor(
-    ValidationConfig memory config
-  ) {
+  constructor(ValidationConfig memory config) {
     require(config.validators > 0, "validators must be > 0");
 
     uint256 high = type(uint256).max;
@@ -47,7 +45,7 @@ abstract contract Validation {
      on the number of total validators in the config.
    * @param slotId SlotID for which to determine the validator group index.
    */
-  function _getValidatorIndex(SlotId slotId) internal view returns(uint16) {
+  function _getValidatorIndex(SlotId slotId) internal view returns (uint16) {
     uint256 slotIdInt = uint256(SlotId.unwrap(slotId));
     return uint16(slotIdInt / _idsPerValidator);
   }
diff --git a/test/Marketplace.test.js b/test/Marketplace.test.js
index 069af6e..91356b3 100644
--- a/test/Marketplace.test.js
+++ b/test/Marketplace.test.js
@@ -1129,15 +1129,10 @@ describe("Marketplace", function () {
       let slot1 = { ...slot, index: slot.index + 1 }
       await token.approve(marketplace.address, request.ask.collateral)
       await marketplace.fillSlot(slot.request, slot1.index, proof)
-      const allSlots = (
-        await marketplace.validationSlots(0)).concat(
-        await marketplace.validationSlots(1)).concat(
-        await marketplace.validationSlots(2)
-      )
-      expect(allSlots).to.have.members([
-        slotId(slot),
-        slotId(slot1),
-      ])
+      const allSlots = (await marketplace.validationSlots(0))
+        .concat(await marketplace.validationSlots(1))
+        .concat(await marketplace.validationSlots(2))
+      expect(allSlots).to.have.members([slotId(slot), slotId(slot1)])
     })
 
     it("removes slot from list when slot is freed", async function () {
@@ -1147,11 +1142,9 @@ describe("Marketplace", function () {
       await marketplace.fillSlot(slot.request, slot1.index, proof)
       await token.approve(marketplace.address, request.ask.collateral)
       await marketplace.freeSlot(slotId(slot))
-      const allSlots = (
-        await marketplace.validationSlots(0)).concat(
-        await marketplace.validationSlots(1)).concat(
-        await marketplace.validationSlots(2)
-      )
+      const allSlots = (await marketplace.validationSlots(0))
+        .concat(await marketplace.validationSlots(1))
+        .concat(await marketplace.validationSlots(2))
       expect(allSlots).to.not.have.members([slotId(slot)])
       expect(allSlots).to.have.members([slotId(slot1)])
     })
@@ -1164,26 +1157,19 @@ describe("Marketplace", function () {
       await marketplace.fillSlot(slot.request, slot1.index, proof)
       await waitUntilCancelled(request)
       await mine()
-      const allSlots = (
-        await marketplace.validationSlots(0)).concat(
-        await marketplace.validationSlots(1)).concat(
-        await marketplace.validationSlots(2)
-      )
-      expect(allSlots).to.have.members([
-        slotId(slot),
-        slotId(slot1),
-      ])
+      const allSlots = (await marketplace.validationSlots(0))
+        .concat(await marketplace.validationSlots(1))
+        .concat(await marketplace.validationSlots(2))
+      expect(allSlots).to.have.members([slotId(slot), slotId(slot1)])
     })
 
     it("removes slot when finished slot is freed", async function () {
       await waitUntilStarted(marketplace, request, proof, token)
       await waitUntilFinished(marketplace, requestId(request))
       await marketplace.freeSlot(slotId(slot))
-      const allSlots = (
-        await marketplace.validationSlots(0)).concat(
-        await marketplace.validationSlots(1)).concat(
-        await marketplace.validationSlots(2)
-      )
+      const allSlots = (await marketplace.validationSlots(0))
+        .concat(await marketplace.validationSlots(1))
+        .concat(await marketplace.validationSlots(2))
       expect(allSlots).to.not.contain(slotId(slot))
     })
 
@@ -1191,11 +1177,9 @@ describe("Marketplace", function () {
       await marketplace.fillSlot(slot.request, slot.index, proof)
       await waitUntilCancelled(request)
       await marketplace.freeSlot(slotId(slot))
-      const allSlots = (
-        await marketplace.validationSlots(0)).concat(
-        await marketplace.validationSlots(1)).concat(
-        await marketplace.validationSlots(2)
-      )
+      const allSlots = (await marketplace.validationSlots(0))
+        .concat(await marketplace.validationSlots(1))
+        .concat(await marketplace.validationSlots(2))
       expect(allSlots).to.not.contain(slotId(slot))
     })
 
@@ -1203,11 +1187,9 @@ describe("Marketplace", function () {
       await waitUntilStarted(marketplace, request, proof, token)
       await waitUntilSlotFailed(marketplace, request, slot)
       await marketplace.freeSlot(slotId(slot))
-      const allSlots = (
-        await marketplace.validationSlots(0)).concat(
-        await marketplace.validationSlots(1)).concat(
-        await marketplace.validationSlots(2)
-      )
+      const allSlots = (await marketplace.validationSlots(0))
+        .concat(await marketplace.validationSlots(1))
+        .concat(await marketplace.validationSlots(2))
       expect(allSlots).to.not.contain(slotId(slot))
     })
   })
diff --git a/test/Validation.test.js b/test/Validation.test.js
index 6d4ed4e..8c4dee4 100644
--- a/test/Validation.test.js
+++ b/test/Validation.test.js
@@ -1,6 +1,6 @@
 const { expect } = require("chai")
 const { ethers } = require("hardhat")
-const {BigNumber, utils} = require("ethers")
+const { BigNumber, utils } = require("ethers")
 
 describe("Validation", function () {
   const zero =
@@ -10,7 +10,7 @@ describe("Validation", function () {
   const mid =
     "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
 
-  describe("constructor", function() {
+  describe("constructor", function () {
     // let validation
     let Validation
 
@@ -18,27 +18,24 @@ describe("Validation", function () {
       Validation = await ethers.getContractFactory("TestValidation")
     })
 
-    it("fails to deploy with > uint16.max validators", async function() {
+    it("fails to deploy with > uint16.max validators", async function () {
       await expect(
-        Validation.deploy({validators: 2**16}) // uint16.max is 2^16-1
+        Validation.deploy({ validators: 2 ** 16 }) // uint16.max is 2^16-1
       ).to.be.reverted
     })
 
-    it("fails to deploy with 0 number of validators", async function() {
-      await expect(
-        Validation.deploy({validators: 0})
-      ).to.be.revertedWith("validators must be > 0")
+    it("fails to deploy with 0 number of validators", async function () {
+      await expect(Validation.deploy({ validators: 0 })).to.be.revertedWith(
+        "validators must be > 0"
+      )
     })
 
-    it("successfully deploys with a valid number of validators", async function() {
-      await expect(
-        Validation.deploy({validators: 1})
-      ).to.be.ok
+    it("successfully deploys with a valid number of validators", async function () {
+      await expect(Validation.deploy({ validators: 1 })).to.be.ok
     })
   })
 
-  describe("groups of SlotIds per validator", function() {
-
+  describe("groups of SlotIds per validator", function () {
     let Validation
 
     const high = ethers.constants.MaxUint256
@@ -56,9 +53,9 @@ describe("Validation", function () {
     })
 
     it("tests that the min and max boundary SlotIds into the correct group", async function () {
-      let validators = 2**16-1 // max value of uint16
-      let idsPerGroup = high.div( validators ).add(1) // as in the contract
-      let validation = await Validation.deploy({validators})
+      let validators = 2 ** 16 - 1 // max value of uint16
+      let idsPerGroup = high.div(validators).add(1) // as in the contract
+      let validation = await Validation.deploy({ validators })
 
       // Returns the minimum SlotId of all allowed SlotIds of the validator
       // (given its index)
@@ -68,7 +65,9 @@ describe("Validation", function () {
       // Returns the maximum SlotId of all allowed SlotIds of the validator
       // (given its index)
       function maxIdFor(validatorIdx) {
-        const max = BigNumber.from(validatorIdx + 1).mul(idsPerGroup).sub(1)
+        const max = BigNumber.from(validatorIdx + 1)
+          .mul(idsPerGroup)
+          .sub(1)
         // Never return more than max value of uint256 because it would
         // overflow. BigNumber.js lets us do MaxUint256+1 without overflows.
         if (max.gt(high)) {
@@ -80,25 +79,29 @@ describe("Validation", function () {
       // Generate randomised number of validators. If we fuzzed all possible
       // number of validators, the test would take far too long to execute. This
       // should absolutely never fail.
-      let validatorsRandomised = Array.from({ length: 128 }, (_) => random(validators))
+      let validatorsRandomised = Array.from({ length: 128 }, (_) =>
+        random(validators)
+      )
 
-      for(let i=0; i<validatorsRandomised.length; i++) {
+      for (let i = 0; i < validatorsRandomised.length; i++) {
         let validatorIdx = validatorsRandomised[i]
 
         // test the boundary of the SlotIds that are allowed in this particular
         // validator validatorIdx
-        let min = toUInt256Hex( minIdFor(validatorIdx) )
-        let max = toUInt256Hex( maxIdFor(validatorIdx) )
+        let min = toUInt256Hex(minIdFor(validatorIdx))
+        let max = toUInt256Hex(maxIdFor(validatorIdx))
 
-        try{
+        try {
           expect(await validation.getValidatorIndex(min)).to.equal(validatorIdx)
           expect(await validation.getValidatorIndex(max)).to.equal(validatorIdx)
-        } catch(e) {
-          console.log('FAILING TEST PARAMETERS')
-          console.log('-----------------------------------------------------------------------------------')
-          console.log('validator index:', validatorIdx)
-          console.log('slotId min:     ', min)
-          console.log('slotId max:     ', max)
+        } catch (e) {
+          console.log("FAILING TEST PARAMETERS")
+          console.log(
+            "-----------------------------------------------------------------------------------"
+          )
+          console.log("validator index:", validatorIdx)
+          console.log("slotId min:     ", min)
+          console.log("slotId max:     ", max)
           throw e
         }
       }
diff --git a/test/examples.js b/test/examples.js
index b2065f0..4506974 100644
--- a/test/examples.js
+++ b/test/examples.js
@@ -16,8 +16,8 @@ const exampleConfiguration = () => ({
     zkeyHash: "",
   },
   validation: {
-    validators: 3
-  }
+    validators: 3,
+  },
 })
 
 const exampleRequest = async () => {