diff --git a/Tools/Scripts/ci.sh b/Tools/Scripts/ci.sh
index 4bc798a70..1500cc2fa 100755
--- a/Tools/Scripts/ci.sh
+++ b/Tools/Scripts/ci.sh
@@ -3,6 +3,7 @@
 project_home="$(dirname "$PWD")"
 
 export PATH="$HOME/narwhal/bin:$PATH"
+export CAPP_AUTO_UPGRADE="yes"
 
 export CAPP_BUILD=$project_home/build_incremental
 time jake test
diff --git a/common.jake b/common.jake
index 6ef6d0eed..c9416635c 100644
--- a/common.jake
+++ b/common.jake
@@ -32,7 +32,7 @@ function ensurePackageUpToDate(packageName, requiredVersion, options)
     if (!options.noupdate)
     {
         print("Update? yes or no:");
-        if (system.stdin.readLine() !== "yes\n")
+        if (!SYSTEM.env["CAPP_AUTO_UPGRADE"] && system.stdin.readLine() !== "yes\n")
         {
             print("Jake aborted.");
             OS.exit(1);