diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 26e7e46c725f4d552c89cbed9ed0b50987e2265d..e601e0d78590e118dd520fb1b8b8806b90dcbde4 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -32,7 +32,7 @@ packages:
     - +root +zlib
   algorithms:
     require:
-    - '@main=master'
+    - '@git.main=master'
   cairo:
     require:
     - '@1.16.0'