diff --git a/lib/spack/spack/compiler.py b/lib/spack/spack/compiler.py
index 225c65917a..1a5be3c3fe 100644
--- a/lib/spack/spack/compiler.py
+++ b/lib/spack/spack/compiler.py
@@ -283,7 +283,7 @@ def find_in_modules(cls):
             modulecmd = which('modulecmd')
             modulecmd.add_default_arg('python')
             output = modulecmd('avail', cls.PrgEnv_compiler, return_oe=True)
-            matches = re.findall(r'(%s)/(\d+[\.\d]+)' % cls.PrgEnv_compiler, output)
+            matches = re.findall(r'(%s)/([\d\.]+[\d$])' % cls.PrgEnv_compiler, output)
 
             for name, version in matches:
                 v = version