diff --git a/.tilt-support b/.tilt-support
index dcd827d04..33a6d3938 100644
--- a/.tilt-support
+++ b/.tilt-support
@@ -14,7 +14,7 @@ def deploy_cert_manager_if_needed():
 docker_build(
     ref='helper',
     context='.',
-    build_args={'GO_VERSION': '1.25'},
+    build_args={'GO_VERSION': '1.26.3'},
     dockerfile_contents='''
 ARG GO_VERSION
 FROM golang:${GO_VERSION}