diff --git a/pkgs/development/libraries/boost/1.85.nix b/pkgs/development/libraries/boost/1.85.nix
deleted file mode 100644
index a95789800e1b..000000000000
--- a/pkgs/development/libraries/boost/1.85.nix
+++ /dev/null
@@ -1,14 +0,0 @@
-{ callPackage, fetchurl, ... } @ args:
-
-callPackage ./generic.nix (args // rec {
-  version = "1.85.0";
-
-  src = fetchurl {
-    urls = [
-      "mirror://sourceforge/boost/boost_${builtins.replaceStrings ["."] ["_"] version}.tar.bz2"
-      "https://boostorg.jfrog.io/artifactory/main/release/${version}/source/boost_${builtins.replaceStrings ["."] ["_"] version}.tar.bz2"
-    ];
-    # SHA256 from http://www.boost.org/users/history/version_1_85_0.html
-    sha256 = "7009fe1faa1697476bdc7027703a2badb84e849b7b0baad5086b087b971f8617";
-  };
-})
diff --git a/pkgs/development/libraries/boost/default.nix b/pkgs/development/libraries/boost/default.nix
index fed80576423b..c1f041e41f29 100644
--- a/pkgs/development/libraries/boost/default.nix
+++ b/pkgs/development/libraries/boost/default.nix
@@ -24,6 +24,5 @@ in {
   boost181 = makeBoost ./1.81.nix;
   boost182 = makeBoost ./1.82.nix;
   boost183 = makeBoost ./1.83.nix;
-  boost185 = makeBoost ./1.85.nix;
   boost186 = makeBoost ./1.86.nix;
 }
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index cf942e1f2967..bc897a2af399 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -158,6 +158,7 @@ mapAliases {
   bloom = throw "'bloom' has been removed because it was unmaintained upstream."; # Added 2024-11-02
   bmap-tools = bmaptool; # Added 2024-08-05
   boost184 = throw "Boost 1.84 has been removed as it is obsolete and no longer used by anything in Nixpkgs"; # Added 2024-11-24
+  boost185 = throw "Boost 1.85 has been removed as it is obsolete and no longer used by anything in Nixpkgs"; # Added 2024-11-24
   boost_process = throw "boost_process has been removed as it is included in regular boost"; # Added 2024-05-01
   bpb = throw "bpb has been removed as it is unmaintained and not compatible with recent Rust versions"; # Added 2024-04-30
   bpftool = throw "'bpftool' has been renamed to/replaced by 'bpftools'"; # Converted to throw 2024-10-17
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 37990657c57d..2edc070db30f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -8851,7 +8851,6 @@ with pkgs;
     boost181
     boost182
     boost183
-    boost185
     boost186
   ;