diff --git a/var/spack/repos/builtin/packages/libcxxwrap-julia/package.py b/var/spack/repos/builtin/packages/libcxxwrap-julia/package.py
index ee4caebe133..324c2d65c5d 100644
--- a/var/spack/repos/builtin/packages/libcxxwrap-julia/package.py
+++ b/var/spack/repos/builtin/packages/libcxxwrap-julia/package.py
@@ -16,7 +16,9 @@ class LibcxxwrapJulia(CMakePackage):
 
     maintainers = ['eloop']
 
-    version('master', branch='master')
+    # note: use the @main branch version if you're building for julia 1.7
+    version('main', branch='main')
+
     version('0.8.3', sha256='b0421d11bdee5ce8af4922de6dfe3b0e5d69b07bb52894e3a22a477bbd27ee9e')
     version('0.8.2', sha256='f8b171def3d61904ba8f9a9052a405c25afbfb9a3c5af3dd30bc36a0184ed539')