diff --git a/task/OTPTest.js b/task/OTPTest.js
index 15ea4a82..d6bff729 100644
--- a/task/OTPTest.js
+++ b/task/OTPTest.js
@@ -28,7 +28,7 @@ function testWithOTP (otpFile, quiet = false) {
         const r = fs.createReadStream(otpFile)
         r.on('end', () => {
           try {
-            const build = exec(`docker run --rm -v ${hostDataDir}/tmp:/opt/opentripplanner/graphs --entrypoint /bin/bash hsldevcom/opentripplanner:${testTag} -c "java -Xmx10G -jar otp-shaded.jar --build graphs/${dir} "`,
+            const build = exec(`docker run --rm -v ${hostDataDir}/tmp:/opt/opentripplanner/graphs --entrypoint /bin/bash hsldevcom/opentripplanner:${testTag} -c "java -Xmx12G -jar otp-shaded.jar --build graphs/${dir} "`,
               { maxBuffer: constants.BUFFER_SIZE })
             build.on('exit', function (c) {
               if (c === 0) {
diff --git a/task/buildOTPGraph.js b/task/buildOTPGraph.js
index 3e901470..2303cafd 100644
--- a/task/buildOTPGraph.js
+++ b/task/buildOTPGraph.js
@@ -20,7 +20,7 @@ const buildGraph = function (config) {
     const version = execSync(`docker pull hsldevcom/opentripplanner:${graphBuildTag};docker run --rm --entrypoint /bin/bash hsldevcom/opentripplanner:${graphBuildTag}  -c "java -jar otp-shaded.jar --version"`)
     const commit = version.toString().match(/commit: ([0-9a-f]+)/)[1]
 
-    const buildGraph = exec(`docker run -v ${hostDataDir}/build:/opt/opentripplanner/graphs --rm --entrypoint /bin/bash hsldevcom/opentripplanner:${graphBuildTag}  -c "java -Xmx10g -jar otp-shaded.jar --build graphs/${config.id}/router"`, { maxBuffer: constants.BUFFER_SIZE })
+    const buildGraph = exec(`docker run -v ${hostDataDir}/build:/opt/opentripplanner/graphs --rm --entrypoint /bin/bash hsldevcom/opentripplanner:${graphBuildTag}  -c "java -Xmx12g -jar otp-shaded.jar --build graphs/${config.id}/router"`, { maxBuffer: constants.BUFFER_SIZE })
     // const buildGraph = exec('ls -la');
     const buildLog = fs.openSync(`${dataDir}/build/${config.id}/build.log`, 'w+')