diff --git a/profiles/package.mask b/profiles/package.mask
index 215bfc7fc9..876c7ae8d9 100644
--- a/profiles/package.mask
+++ b/profiles/package.mask
@@ -18,6 +18,12 @@
 
 # New entries go on top.
 
+# Lucio Sauer <watermanpaint@posteo.net> (2025-10-17)
+# Header-only library with no revdeps and dead upstream for 3 years.
+# Fails to build w/ dev-build/cmake-4.
+# Removal on 2025-11-17
+dev-cpp/rang
+
 # Takuya Wakazono <pastalian46@gmail.com> (2025-10-14)
 # Fails to build. No maintainer.
 # Removal on 2025-11-14