diff --git a/build/tfs/darwin/continuous-build-darwin.yml b/build/tfs/darwin/continuous-build-darwin.yml
index 5fadd2b4d8d..9d3f6254cd6 100644
--- a/build/tfs/darwin/continuous-build-darwin.yml
+++ b/build/tfs/darwin/continuous-build-darwin.yml
@@ -4,7 +4,7 @@ steps:
     versionSpec: "8.9.1"
 - task: geeklearningio.gl-vsts-tasks-yarn.yarn-installer-task.YarnInstaller@2
   inputs:
-    versionSpec: "1.3.2"
+    versionSpec: "1.9.4"
 - script: |
     yarn
   displayName: Install Dependencies
diff --git a/build/tfs/darwin/product-build-darwin.yml b/build/tfs/darwin/product-build-darwin.yml
index 0dd31503586..c823012c1df 100644
--- a/build/tfs/darwin/product-build-darwin.yml
+++ b/build/tfs/darwin/product-build-darwin.yml
@@ -5,7 +5,7 @@ steps:
 
 - task: geeklearningio.gl-vsts-tasks-yarn.yarn-installer-task.YarnInstaller@2
   inputs:
-    versionSpec: "1.3.2"
+    versionSpec: "1.9.4"
 
 - script: |
     set -e
diff --git a/build/tfs/linux/continuous-build-linux.yml b/build/tfs/linux/continuous-build-linux.yml
index abd9a9126dd..9c2e125447b 100644
--- a/build/tfs/linux/continuous-build-linux.yml
+++ b/build/tfs/linux/continuous-build-linux.yml
@@ -14,7 +14,7 @@ steps:
     versionSpec: "8.9.1"
 - task: geeklearningio.gl-vsts-tasks-yarn.yarn-installer-task.YarnInstaller@2
   inputs:
-    versionSpec: "1.3.2"
+    versionSpec: "1.9.4"
 - script: |
     yarn
   displayName: Install Dependencies
diff --git a/build/tfs/linux/product-build-linux.yml b/build/tfs/linux/product-build-linux.yml
index 9505d71ff34..f38980542e8 100644
--- a/build/tfs/linux/product-build-linux.yml
+++ b/build/tfs/linux/product-build-linux.yml
@@ -5,7 +5,7 @@ steps:
 
 - task: geeklearningio.gl-vsts-tasks-yarn.yarn-installer-task.YarnInstaller@2
   inputs:
-    versionSpec: "1.3.2"
+    versionSpec: "1.9.4"
 
 - script: |
     set -e
diff --git a/build/tfs/win32/continuous-build-win32.yml b/build/tfs/win32/continuous-build-win32.yml
index 4e409f5d53d..780c9a0e197 100644
--- a/build/tfs/win32/continuous-build-win32.yml
+++ b/build/tfs/win32/continuous-build-win32.yml
@@ -4,7 +4,7 @@ steps:
     versionSpec: "8.9.1"
 - task: geeklearningio.gl-vsts-tasks-yarn.yarn-installer-task.YarnInstaller@2
   inputs:
-    versionSpec: "1.3.2"
+    versionSpec: "1.9.4"
 - powershell: |
     yarn
   displayName: Install Dependencies
diff --git a/build/tfs/win32/product-build-win32.yml b/build/tfs/win32/product-build-win32.yml
index c887ade31fd..31288bdbdda 100644
--- a/build/tfs/win32/product-build-win32.yml
+++ b/build/tfs/win32/product-build-win32.yml
@@ -5,7 +5,7 @@ steps:
 
 - task: geeklearningio.gl-vsts-tasks-yarn.yarn-installer-task.YarnInstaller@2
   inputs:
-    versionSpec: "1.3.2"
+    versionSpec: "1.9.4"
 
 - powershell: |
     . build/tfs/win32/exec.ps1