diff --git a/migrate-base.js b/migrate-base.js
index 7d196131..b1ad01ce 100644
--- a/migrate-base.js
+++ b/migrate-base.js
@@ -1,4 +1,4 @@
-async function migrateBase ({ arcVersion, web3, spinner, confirm, opts, logTx, previousMigration }) {
+async function migrateBase ({ arcVersion, web3, spinner, confirm, opts, logTx, previousMigration, getArcVersionNumber }) {
   if (!(await confirm('About to migrate base contracts. Continue?'))) {
     return
   }
@@ -98,7 +98,7 @@ async function migrateBase ({ arcVersion, web3, spinner, confirm, opts, logTx, p
       [],
       web3.eth.accounts.wallet[0].address
     )
-    if (Number(arcVersion.slice(-2)) >= 29) {
+    if (getArcVersionNumber(arcVersion) >= 29) {
       DAOTracker = await deploy(require(`./contracts/${arcVersion}/DAOTracker.json`))
     }
   } else {
@@ -109,7 +109,7 @@ async function migrateBase ({ arcVersion, web3, spinner, confirm, opts, logTx, p
         [],
         '0x85e7fa550b534656d04d143b9a23a11e05077da3' // DAOstack's controlled account
       )
-      if (Number(arcVersion.slice(-2)) >= 29) {
+      if (getArcVersionNumber(arcVersion) >= 29) {
         DAOTracker = await deploy(require(`./contracts/${arcVersion}/DAOTracker.json`))
         const daoTracker = new web3.eth.Contract(
           require(`./contracts/${arcVersion}/DAOTracker.json`).abi,
@@ -128,7 +128,7 @@ async function migrateBase ({ arcVersion, web3, spinner, confirm, opts, logTx, p
         [],
         '0x73Db6408abbea97C5DB8A2234C4027C315094936'
       )
-      if (Number(arcVersion.slice(-2)) >= 29) {
+      if (getArcVersionNumber(arcVersion) >= 29) {
         DAOTracker = await deploy(require(`./contracts/${arcVersion}/DAOTracker.json`))
         const daoTracker = new web3.eth.Contract(
           require(`./contracts/${arcVersion}/DAOTracker.json`).abi,
@@ -146,7 +146,7 @@ async function migrateBase ({ arcVersion, web3, spinner, confirm, opts, logTx, p
 
   const ControllerCreator = await deploy(require(`./contracts/${arcVersion}/ControllerCreator.json`))
 
-  if (Number(arcVersion.slice(-2)) >= 29) {
+  if (getArcVersionNumber(arcVersion) >= 29) {
     await deploy(
       require(`./contracts/${arcVersion}/DaoCreator.json`),
       ['ControllerCreator', 'DAOTracker'],
@@ -177,10 +177,10 @@ async function migrateBase ({ arcVersion, web3, spinner, confirm, opts, logTx, p
   await deploy(require(`./contracts/${arcVersion}/TokenCapGC.json`))
   await deploy(require(`./contracts/${arcVersion}/VoteInOrganizationScheme.json`))
   await deploy(require(`./contracts/${arcVersion}/OrganizationRegister.json`))
-  if (Number(arcVersion.slice(-2)) >= 22) {
+  if (getArcVersionNumber(arcVersion) >= 22) {
     await deploy(require(`./contracts/${arcVersion}/Redeemer.json`))
   }
-  if (Number(arcVersion.slice(-2)) >= 24) {
+  if (getArcVersionNumber(arcVersion) >= 24) {
     await deploy(require(`./contracts/${arcVersion}/UGenericScheme.json`))
   } else {
     await deploy(require(`./contracts/${arcVersion}/GenericScheme.json`))
diff --git a/migrate-dao.js b/migrate-dao.js
index 95960184..73d32470 100644
--- a/migrate-dao.js
+++ b/migrate-dao.js
@@ -1,7 +1,7 @@
 const utils = require('./utils.js')
 const sanitize = require('./sanitize')
 
-async function migrateDAO ({ arcVersion, web3, spinner, confirm, opts, migrationParams, logTx, previousMigration, customAbisLocation, restart, getState, setState, cleanState, sendTx }) {
+async function migrateDAO ({ arcVersion, web3, spinner, confirm, opts, migrationParams, logTx, previousMigration, customAbisLocation, restart, getState, setState, cleanState, sendTx, getArcVersionNumber }) {
   const network = await web3.eth.net.getNetworkType()
   if (restart) {
     cleanState(network)
@@ -66,8 +66,8 @@ async function migrateDAO ({ arcVersion, web3, spinner, confirm, opts, migration
   )
 
   const genericScheme = new web3.eth.Contract(
-    Number(arcVersion.slice(-2)) >= 24 ? require(`./contracts/${arcVersion}/UGenericScheme.json`).abi : require(`./contracts/${arcVersion}/GenericScheme.json`).abi,
-    Number(arcVersion.slice(-2)) >= 24 ? UGenericScheme : GenericScheme,
+    getArcVersionNumber(arcVersion) >= 24 ? require(`./contracts/${arcVersion}/UGenericScheme.json`).abi : require(`./contracts/${arcVersion}/GenericScheme.json`).abi,
+    getArcVersionNumber(arcVersion) >= 24 ? UGenericScheme : GenericScheme,
     opts
   )
 
@@ -313,15 +313,15 @@ async function migrateDAO ({ arcVersion, web3, spinner, confirm, opts, migration
       )
     }
 
-    if (migrationParams.noTrack !== true && Number(arcVersion.slice(-2)) >= 29 && deploymentState.trackedDAO !== true) {
+    if (migrationParams.noTrack !== true && getArcVersionNumber(arcVersion) >= 29 && deploymentState.trackedDAO !== true) {
       const daoTracker = new web3.eth.Contract(
         require(`./contracts/${arcVersion}/DAOTracker.json`).abi,
         DAOTracker,
         opts
       )
-      tx = (await sendTx((Number(arcVersion.slice(-2)) >= 32
+      tx = (await sendTx(getArcVersionNumber(arcVersion) >= 32
         ? await daoTracker.methods.track(avatar.options.address, deploymentState.Controller, arcVersion)
-        : await daoTracker.methods.track(avatar.options.address, deploymentState.Controller)), 'Registering DAO in DAOTracker')).receipt
+        : await daoTracker.methods.track(avatar.options.address, deploymentState.Controller), 'Registering DAO in DAOTracker')).receipt
       await logTx(tx, 'Finished Registering DAO in DAOTracker')
       deploymentState.trackedDAO = true
       setState(deploymentState, network)
@@ -541,7 +541,7 @@ async function migrateDAO ({ arcVersion, web3, spinner, confirm, opts, migration
       }
 
       deploymentState.schemeNames.push('Generic Scheme')
-      deploymentState.schemes.push(Number(arcVersion.slice(-2)) >= 24 ? UGenericScheme : GenericScheme)
+      deploymentState.schemes.push(getArcVersionNumber(arcVersion) >= 24 ? UGenericScheme : GenericScheme)
       deploymentState.params.push(genericSchemeParams)
       deploymentState.permissions.push('0x00000010')
       setState(deploymentState, network)
diff --git a/migrate.js b/migrate.js
index 2f6097a7..c68e69ba 100755
--- a/migrate.js
+++ b/migrate.js
@@ -174,6 +174,9 @@ const wrapCommand = fn => async options => {
         }
       }
     },
+    getArcVersionNumber: function getArcVersionNumber (arcVersion) {
+      return Number(arcVersion.slice(-2))
+    },
     sendTx: async function sendTx (tx, msg) {
       spinner.start(msg)
       let gas = 0