diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 1c84367cd7..05a48bd54b 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -17,131 +17,133 @@ trigger:
 pr: none
 
 variables:
-  graalVersion: 19.2.1 # Please ensure this is in sync with the graalAPIVersion in build.sbt
+  graalVersion: 19.3.0 # Please ensure this is in sync with the graalAPIVersion in build.sbt
+  graalReleasesUrl: https://github.com/graalvm/graalvm-ce-builds/releases/download
+  graalDistributionName: graalvm-ce-java8
   sbtVersion: 1.3.3    # Please ensure this is in sync with project/build.properties
 
 jobs:
-- job: Linux
-  timeoutInMinutes: 90
-  pool:
-    vmImage: 'Ubuntu-16.04'
-  container:
-    image: oracle/graalvm-ce:$(graalVersion)
-    options: "--name ci-container -v /usr/bin/docker:/tmp/docker:ro"
-  steps:
-  - script: /tmp/docker exec -t -u 0 ci-container sh -c "yum install -y sudo"
-    displayName: Setup Sudo
-  - script: |
-      curl -fSL -o sbt.tgz https://piccolo.link/sbt-$(sbtVersion).tgz
-      tar -x -z -C ~ -f sbt.tgz
-      echo "##vso[task.setvariable variable=PATH]~/sbt/bin/:$PATH"
-    displayName: Install SBT
-  - script: |
-      sbt -no-colors test
-    displayName: Test All
-    continueOnError: true
-  - script: |
-      sbt -no-colors syntax/bench
-    displayName: Benchmark the Parser
-    continueOnError: true
-  - script: |
-      sbt -no-colors runtime/Benchmark/compile
-    displayName: Check Runtime Benchmarks Compile
-    continueOnError: true
-  - task: PublishTestResults@2
-    inputs:
-      testResultsFormat: 'JUnit'
-      testResultsFiles: '**/TEST-*.xml'
-  - script: |
-      sbt language_server/assembly
-    displayName: Build the Uberjar
-    continueOnError: true
-  - task: CopyFiles@2
-    inputs:
-      contents: "enso.jar"
-      TargetFolder: "$(Build.ArtifactStagingDirectory)"
-  - task: PublishBuildArtifacts@1
-    inputs:
-      pathtoPublish: "$(Build.ArtifactStagingDirectory)"
-      artifactName: enso-cli
-  - script: |
-      echo "##vso[task.complete result=Failed;]DONE"
-    condition: eq(variables['Agent.JobStatus'], 'SucceededWithIssues')
-    displayName: Fail on Issues
-- job: macOS
-  timeoutInMinutes: 90
-  pool:
-    vmImage: macOS-10.13
-  steps:
-  - script: |
-      curl -fSL -o graal.tar.gz https://github.com/oracle/graal/releases/download/vm-$(graalVersion)/graalvm-ce-darwin-amd64-$(graalVersion).tar.gz
-      tar -x -z -C ~ -f graal.tar.gz
-      ls ~/graalvm-ce-$(graalVersion)
-      sudo mv ~/graalvm-ce-$(graalVersion) /Library/Java/JavaVirtualMachines
-      echo "##vso[task.setvariable variable=JAVA_HOME]/Library/Java/JavaVirtualMachines/graalvm-ce-$(graalVersion)/Contents/Home"
-      echo "##vso[task.setvariable variable=PATH]/Library/Java/JavaVirtualMachines/graalvm-ce-$(graalVersion)/Contents/Home/bin:$PATH"
-    displayName: Install GraalVM
-  - script: |
-      curl -fSL -o sbt.tgz https://piccolo.link/sbt-$(sbtVersion).tgz
-      tar -x -z -C ~ -f sbt.tgz
-      echo "##vso[task.setvariable variable=PATH]~/sbt/bin/:$PATH"
-    displayName: Install SBT
-  - script: |
-      sbt -no-colors test
-    displayName: Test All
-    continueOnError: true
-  - script: |
-      sbt -no-colors syntax/bench
-    displayName: Benchmark the Parser
-    continueOnError: true
-  - script: |
-      sbt -no-colors runtime/Benchmark/compile
-    displayName: Check Runtime Benchmarks Compile
-    continueOnError: true
-  - task: PublishTestResults@2
-    inputs:
-      testResultsFormat: 'JUnit'
-      testResultsFiles: '**/TEST-*.xml'
-  - script: |
-      echo "##vso[task.complete result=Failed;]DONE"
-    condition: eq(variables['Agent.JobStatus'], 'SucceededWithIssues')
-    displayName: Fail on Issues
-- job: Windows
-  timeoutInMinutes: 90
-  pool:
-    vmImage: windows-2019
-  steps:
-  - script: |
-      curl -fSL -o graal.zip https://github.com/oracle/graal/releases/download/vm-$(graalVersion)/graalvm-ce-windows-amd64-$(graalVersion).zip
-      7z x -y -oC:\ graal.zip
-    displayName: Install GraalVM
-  - script: |
-      curl -fSL -o sbt.tgz https://piccolo.link/sbt-$(sbtVersion).tgz
-      tar -x -z -C %USERPROFILE% -f sbt.tgz
-    displayName: Install SBT
-  - script: |
-      call refreshenv
-      echo ##vso[task.setvariable variable=JAVA_HOME]C:\graalvm-ce-$(graalVersion)
-      echo ##vso[task.setvariable variable=PATH]C:\graalvm-ce-$(graalVersion)\bin;%PATH%
-      echo ##vso[task.setvariable variable=PATH]%USERPROFILE%\sbt\bin\;%PATH%
-    displayName: Adjust Environment Variables
-  - script: |
-      sbt.bat test
-    continueOnError: true
-    displayName: Test All
-  - script: |
-      sbt syntax/bench
-    displayName: Benchmark the Parser
-    continueOnError: true
-  - script: |
-      sbt runtime/Benchmark/compile
-    displayName: Check Runtime Benchmarks Compile
-    continueOnError: true
-  - task: PublishTestResults@2
-    inputs:
-      testResultsFormat: 'JUnit'
-      testResultsFiles: '**/TEST-*.xml'
-  - script: |
-      echo "##vso[task.complete result=Failed;]DONE"
-    condition: eq(variables['Agent.JobStatus'], 'SucceededWithIssues')
-    displayName: Fail on Issues
+  - job: Linux
+    timeoutInMinutes: 90
+    pool:
+      vmImage: 'Ubuntu-16.04'
+    container:
+      image: oracle/graalvm-ce:$(graalVersion)-java8
+      options: "--name ci-container -v /usr/bin/docker:/tmp/docker:ro"
+    steps:
+      - script: /tmp/docker exec -t -u 0 ci-container sh -c "yum install -y sudo"
+        displayName: Setup Sudo
+      - script: |
+          curl -fSL -o sbt.tgz https://piccolo.link/sbt-$(sbtVersion).tgz
+          tar -x -z -C ~ -f sbt.tgz
+          echo "##vso[task.setvariable variable=PATH]~/sbt/bin/:$PATH"
+        displayName: Install SBT
+      - script: |
+          sbt -no-colors test
+        displayName: Test All
+        continueOnError: true
+      - script: |
+          sbt -no-colors syntax/bench
+        displayName: Benchmark the Parser
+        continueOnError: true
+      - script: |
+          sbt -no-colors runtime/Benchmark/compile
+        displayName: Check Runtime Benchmarks Compile
+        continueOnError: true
+      - task: PublishTestResults@2
+        inputs:
+          testResultsFormat: 'JUnit'
+          testResultsFiles: '**/TEST-*.xml'
+      - script: |
+          sbt language_server/assembly
+        displayName: Build the Uberjar
+        continueOnError: true
+      - task: CopyFiles@2
+        inputs:
+          contents: "enso.jar"
+          TargetFolder: "$(Build.ArtifactStagingDirectory)"
+      - task: PublishBuildArtifacts@1
+        inputs:
+          pathtoPublish: "$(Build.ArtifactStagingDirectory)"
+          artifactName: enso-cli
+      - script: |
+          echo "##vso[task.complete result=Failed;]DONE"
+        condition: eq(variables['Agent.JobStatus'], 'SucceededWithIssues')
+        displayName: Fail on Issues
+  - job: macOS
+    timeoutInMinutes: 90
+    pool:
+      vmImage: macOS-10.13
+    steps:
+      - script: |
+          curl -fSL -o graal.tar.gz $(graalReleasesUrl)/vm-$(graalVersion)/$(graalDistributionName)-darwin-amd64-$(graalVersion).tar.gz
+          tar -x -z -C ~ -f graal.tar.gz
+          ls ~/$(graalDistributionName)-$(graalVersion)
+          sudo mv ~/$(graalDistributionName)-$(graalVersion) /Library/Java/JavaVirtualMachines
+          echo "##vso[task.setvariable variable=JAVA_HOME]/Library/Java/JavaVirtualMachines/$(graalDistributionName)-$(graalVersion)/Contents/Home"
+          echo "##vso[task.setvariable variable=PATH]/Library/Java/JavaVirtualMachines/$(graalDistributionName)-$(graalVersion)/Contents/Home/bin:$PATH"
+        displayName: Install GraalVM
+      - script: |
+          curl -fSL -o sbt.tgz https://piccolo.link/sbt-$(sbtVersion).tgz
+          tar -x -z -C ~ -f sbt.tgz
+          echo "##vso[task.setvariable variable=PATH]~/sbt/bin/:$PATH"
+        displayName: Install SBT
+      - script: |
+          sbt -no-colors test
+        displayName: Test All
+        continueOnError: true
+      - script: |
+          sbt -no-colors syntax/bench
+        displayName: Benchmark the Parser
+        continueOnError: true
+      - script: |
+          sbt -no-colors runtime/Benchmark/compile
+        displayName: Check Runtime Benchmarks Compile
+        continueOnError: true
+      - task: PublishTestResults@2
+        inputs:
+          testResultsFormat: 'JUnit'
+          testResultsFiles: '**/TEST-*.xml'
+      - script: |
+          echo "##vso[task.complete result=Failed;]DONE"
+        condition: eq(variables['Agent.JobStatus'], 'SucceededWithIssues')
+        displayName: Fail on Issues
+  - job: Windows
+    timeoutInMinutes: 90
+    pool:
+      vmImage: windows-2019
+    steps:
+      - script: |
+          curl -fSL -o graal.zip $(graalReleasesUrl)/vm-$(graalVersion)/$(graalDistributionName)-windows-amd64-$(graalVersion).zip
+          7z x -y -oC:\ graal.zip
+        displayName: Install GraalVM
+      - script: |
+          curl -fSL -o sbt.tgz https://piccolo.link/sbt-$(sbtVersion).tgz
+          tar -x -z -C %USERPROFILE% -f sbt.tgz
+        displayName: Install SBT
+      - script: |
+          call refreshenv
+          echo ##vso[task.setvariable variable=JAVA_HOME]C:\$(graalDistributionName)-$(graalVersion)
+          echo ##vso[task.setvariable variable=PATH]C:\$(graalDistributionName)-$(graalVersion)\bin;%PATH%
+          echo ##vso[task.setvariable variable=PATH]%USERPROFILE%\sbt\bin\;%PATH%
+        displayName: Adjust Environment Variables
+      - script: |
+          sbt.bat test
+        continueOnError: true
+        displayName: Test All
+      - script: |
+          sbt syntax/bench
+        displayName: Benchmark the Parser
+        continueOnError: true
+      - script: |
+          sbt runtime/Benchmark/compile
+        displayName: Check Runtime Benchmarks Compile
+        continueOnError: true
+      - task: PublishTestResults@2
+        inputs:
+          testResultsFormat: 'JUnit'
+          testResultsFiles: '**/TEST-*.xml'
+      - script: |
+          echo "##vso[task.complete result=Failed;]DONE"
+        condition: eq(variables['Agent.JobStatus'], 'SucceededWithIssues')
+        displayName: Fail on Issues
diff --git a/build.sbt b/build.sbt
index 19180793c6..78c3ff55de 100644
--- a/build.sbt
+++ b/build.sbt
@@ -9,7 +9,7 @@ import sbtassembly.AssemblyPlugin.defaultUniversalScript
 //////////////////////////////
 
 val scalacVersion = "2.12.10"
-val graalVersion  = "19.2.0.1"
+val graalVersion  = "19.3.0"
 val circeVersion  = "0.11.1"
 organization in ThisBuild := "org.enso"
 scalaVersion in ThisBuild := scalacVersion
@@ -300,7 +300,8 @@ lazy val project_manager = (project in file("common/scala/project-manager"))
 val truffleRunOptions = Seq(
   "-Dgraal.TruffleIterativePartialEscape=true",
   "-XX:-UseJVMCIClassLoader",
-  "-Dgraal.TruffleBackgroundCompilation=false"
+  "-Dgraal.TruffleBackgroundCompilation=false",
+  "-Dgraalvm.locatorDisabled=true"
 )
 
 val truffleRunOptionsSettings = Seq(
diff --git a/engine/language-server/jupyter-kernel/enso/kernel.json b/engine/language-server/jupyter-kernel/enso/kernel.json
index 78e9bef642..bef041d85e 100644
--- a/engine/language-server/jupyter-kernel/enso/kernel.json
+++ b/engine/language-server/jupyter-kernel/enso/kernel.json
@@ -2,6 +2,7 @@
   "argv": [
     "java",
     "-XX:-UseJVMCIClassLoader",
+    "-Dgraalvm.locatorDisabled=true",
     "-jar",
     "<ABSOLUTE_PATH_TO_ENSO_JAR>",
     "--jupyter-kernel",
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/node/callable/dispatch/LoopingCallOptimiserNode.java b/engine/runtime/src/main/java/org/enso/interpreter/node/callable/dispatch/LoopingCallOptimiserNode.java
index 00f91697cc..4d801687fa 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/node/callable/dispatch/LoopingCallOptimiserNode.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/node/callable/dispatch/LoopingCallOptimiserNode.java
@@ -45,7 +45,7 @@ public class LoopingCallOptimiserNode extends CallOptimiserNode {
     VirtualFrame frame = Truffle.getRuntime().createVirtualFrame(null, loopFrameDescriptor);
     ((RepeatedCallNode) loopNode.getRepeatingNode())
         .setNextCall(frame, function, callerInfo, state, arguments);
-    loopNode.executeLoop(frame);
+    loopNode.execute(frame);
 
     return ((RepeatedCallNode) loopNode.getRepeatingNode()).getResult(frame);
   }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/Context.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/Context.java
index 393d9d3b23..dc8e4160e7 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/Context.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/Context.java
@@ -55,7 +55,8 @@ public class Context {
                     SourceFile::qualifiedName,
                     srcFile ->
                         new Module(
-                            getEnvironment().getTruffleFile(srcFile.file().getAbsolutePath()))));
+                            getEnvironment()
+                                .getInternalTruffleFile(srcFile.file().getAbsolutePath()))));
 
     this.compiler = new Compiler(this.language, knownFiles, this);
   }