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-rw-r--r--var/spack/repos/builtin/packages/scotch/package.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/var/spack/repos/builtin/packages/scotch/package.py b/var/spack/repos/builtin/packages/scotch/package.py
index 58bbcd8383..9673fba5e2 100644
--- a/var/spack/repos/builtin/packages/scotch/package.py
+++ b/var/spack/repos/builtin/packages/scotch/package.py
@@ -50,7 +50,7 @@ class Scotch(Package):
variant('metis', default=True,
description='Build metis and parmetis wrapper libraries')
- depends_on('flex', type='build')
+ depends_on('flex@:2.6.1', type='build')
depends_on('bison', type='build')
depends_on('mpi', when='+mpi')
depends_on('zlib', when='+compression')