diff --git a/lib/handlers/create.js b/lib/handlers/create.js
index b241b8e..896dfe5 100644
--- a/lib/handlers/create.js
+++ b/lib/handlers/create.js
@@ -1,6 +1,6 @@
 const zh                  = require('../zh-client'),
       resolveIssueNumbers = require('../resolve-issue-number'),
-      { INPROG_COLUMN }   = process.env;
+      { INPUT_INPROG_COLUMN }   = process.env;
 
 exports.branch = async function handleCreatedBranch (tools) {
   tools.log.info('Handling created branch...');
@@ -34,12 +34,12 @@ exports.branch = async function handleCreatedBranch (tools) {
     }
 
     // Move issue(s) to INPROG_COLUMN
-    if (INPROG_COLUMN) {
+    if (INPUT_INPROG_COLUMN) {
       try {
         tools.log.info(`Moving issue #${issueNo} to in progress...`);
 
         await zh.issues.moveIssueBetweenPipelines(payload.repository.id, issueNo, {
-          pipeline_id: INPROG_COLUMN,
+          pipeline_id: INPUT_INPROG_COLUMN,
           position: 'top'
         });
 
diff --git a/lib/handlers/pull_request.js b/lib/handlers/pull_request.js
index 91681b7..c8c4d4c 100644
--- a/lib/handlers/pull_request.js
+++ b/lib/handlers/pull_request.js
@@ -1,8 +1,8 @@
 const zh                  = require('../zh-client'),
       resolveIssueNumbers = require('../resolve-issue-number'),
       {
-        PR_COLUMN,
-        REVIEW_COLUMN
+        INPUT_PR_COLUMN,
+        INPUT_REVIEW_COLUMN
       } = process.env;
 
 exports.opened = async function handleOpenedPR (tools) {
@@ -12,11 +12,11 @@ exports.opened = async function handleOpenedPR (tools) {
         { payload } = tools.context;
 
   // Move PR to PR issue column specified by ENV var
-  if (PR_COLUMN) {
+  if (INPUT_PR_COLUMN) {
     tools.log.info('ZH :: Moving opened PR...');
     try {
       await zh.issues.moveIssueBetweenPipelines(payload.repository.id, payload.number, {
-        pipeline_id: PR_COLUMN,
+        pipeline_id: INPUT_PR_COLUMN,
         position: 'top'
       });
     } catch (e) {
@@ -27,7 +27,7 @@ exports.opened = async function handleOpenedPR (tools) {
   }
 
   // Move PR closes to REVIEW_COLUMN
-  if (REVIEW_COLUMN) {
+  if (INPUT_REVIEW_COLUMN) {
     let issueNumbers = resolveIssueNumbers(payload.pull_request.head.ref, payload.pull_request.body);
 
     for (let i = 0; i < issueNumbers.length; i++) {
@@ -35,7 +35,7 @@ exports.opened = async function handleOpenedPR (tools) {
 
       try {
         await zh.issues.moveIssueBetweenPipelines(payload.repository.id, issueNo, {
-          pipeline_id: REVIEW_COLUMN,
+          pipeline_id: INPUT_REVIEW_COLUMN,
           position: 'top'
         });
       } catch (e) {
diff --git a/lib/zh-client.js b/lib/zh-client.js
index 0a53894..4898e60 100644
--- a/lib/zh-client.js
+++ b/lib/zh-client.js
@@ -1,9 +1,9 @@
 const ZenhubAPI = require('zenhub-client'),
       { promisifyAll } = require('bluebird'),
-      { ZENHUB_API_KEY } = process.env;
+      { INPUT_ZENHUB_API_KEY } = process.env;
 
-if (!ZENHUB_API_KEY) {
+if (!INPUT_ZENHUB_API_KEY) {
   throw new Error('"ZENHUB_API_KEY" was not found, please set it in environment secrets.');
 }
 
-module.exports = new ZenhubAPI(ZENHUB_API_KEY);
+module.exports = new ZenhubAPI(INPUT_ZENHUB_API_KEY);