diff --git a/var/spack/repos/builtin/packages/must/package.py b/var/spack/repos/builtin/packages/must/package.py
index 1b3b0b152d..5d6c36bb04 100644
--- a/var/spack/repos/builtin/packages/must/package.py
+++ b/var/spack/repos/builtin/packages/must/package.py
@@ -21,11 +21,8 @@ class Must(CMakePackage):
 
     version("1.9.0", sha256="24998f4ca6bce718d69347de90798600f2385c21266c2d1dd39a87dd8bd1fba4")
     version("1.8.0", sha256="9754fefd2e4c8cba812f8b56a5dd929bc84aa599b2509305e1eb8518be0a8a39")
-    version("1.8.0-rc1", sha256="49fd2487fbd1aa41f4252c7e37efebd3f6ff48218c88e82f34b88d59348fe406")
-    version(
-        "1.8-preview", sha256="67b4b061db7a893e22a6610e2085072716d11738bc6cc3cb3ffd60d6833e8bad"
-    )
     version("1.7.2", sha256="616c54b7487923959df126ac4b47ae8c611717d679fe7ec29f57a89bf0e2e0d0")
+
     variant("test", default=False, description="Enable must internal tests")
     variant("tsan", default=True, description="Enable thread sanitizer")
     variant("graphviz", default=False, description="Use to generate graphs")