diff --git a/EM/relion/files/variants b/EM/relion/files/variants
index 16ed3ab..bc42c22 100644
--- a/EM/relion/files/variants
+++ b/EM/relion/files/variants
@@ -10,3 +10,4 @@ relion/3.1.1	deprecated	gcc/9.3.0 openmpi/4.0.4_slurm cuda/11.0.3 b:cmake/3.15.5
 relion/3.1.1-1	stable	gcc/9.2.0 openmpi/4.0.5_slurm cuda/11.0.3 b:cmake/3.15.5 b:tiff/4.0.9 b:git/2.22.0
 relion/3.1.2	stable	gcc/9.2.0 openmpi/4.0.5_slurm cuda/11.0.3 b:cmake/3.15.5 b:tiff/4.0.9 b:git/2.22.0
 relion/3.1.3	unstable	gcc/9.2.0 openmpi/4.0.5_slurm cuda/11.0.3 b:cmake/3.15.5 b:tiff/4.0.9 b:git/2.22.0
+relion/4.0-beta	unstable	gcc/9.2.0 openmpi/4.0.5_slurm cuda/11.0.3 b:cmake/3.15.5 b:tiff/4.0.9 b:git/2.22.0