diff --git a/Cargo.toml b/Cargo.toml
index 4e8fcb9188..0231db4f04 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -196,10 +196,13 @@ feat_common_core = [
 feat_Tier1 = [
   "feat_common_core",
   "arch",
+  "kill",
   "hostname",
   "nproc",
   "sync",
+  "timeout",
   "uname",
+  "uptime",
   "whoami",
 ]
 ## (primary platforms) feature sets
@@ -303,7 +306,7 @@ feat_os_unix_musl = [
   "feat_require_unix_utmpx",
 ]
 # "feat_os_windows" == set of utilities which can be built/run on modern windows platforms
-feat_os_windows = ["feat_Tier1", "kill", "stdbuf", "timeout", "uptime"]
+feat_os_windows = ["feat_Tier1", "stdbuf"]
 ## (secondary platforms) feature sets
 # "feat_os_unix_gnueabihf" == set of utilities which can be built/run on the "arm-unknown-linux-gnueabihf" target (ARMv6 Linux [hardfloat])
 feat_os_unix_gnueabihf = [