diff --git a/lib/spack/spack/cmd/compiler.py b/lib/spack/spack/cmd/compiler.py
index 814faabf263..b6e3096db81 100644
--- a/lib/spack/spack/cmd/compiler.py
+++ b/lib/spack/spack/cmd/compiler.py
@@ -83,7 +83,7 @@ def compiler_find(args):
     if args.mixed_toolchain:
         warnings.warn(
             "The '--mixed-toolchain' option has been deprecated in Spack v0.23, and currently "
-            "has no effect. The option will be removed in Spack v0.25"
+            "has no effect. The option will be removed in Spack v1.1"
         )
 
     paths = args.add_paths or None
diff --git a/lib/spack/spack/schema/packages.py b/lib/spack/spack/schema/packages.py
index 8f550410bf7..6623f325719 100644
--- a/lib/spack/spack/schema/packages.py
+++ b/lib/spack/spack/schema/packages.py
@@ -141,8 +141,8 @@
                     {
                         "names": ["compiler"],
                         "message": "The packages:all:compiler preference has been deprecated in "
-                        "Spack v0.24, and is currently ignored. It will be removed from config in "
-                        "Spack v0.26.",
+                        "Spack v1.0, and is currently ignored. It will be removed from config in "
+                        "Spack v1.2.",
                         "error": False,
                     }
                 ],