diff --git a/pkgs/applications/editors/emacs-modes/melpa-packages.nix b/pkgs/applications/editors/emacs-modes/melpa-packages.nix
index 24e541f2695..e642895c079 100644
--- a/pkgs/applications/editors/emacs-modes/melpa-packages.nix
+++ b/pkgs/applications/editors/emacs-modes/melpa-packages.nix
@@ -50,6 +50,15 @@ env NIXPKGS_ALLOW_BROKEN=1 nix-instantiate --show-trace ../../../../ -A emacsPac
         # part of a larger package
         caml = dontConfigure super.caml;
 
+        cmake-mode = super.cmake-mode.overrideAttrs (attrs: {
+          buildInputs = (attrs.buildInputs or []) ++ [
+            external.openssl
+          ];
+          nativeBuildInputs = (attrs.nativeBuildInputs or []) ++ [
+            external.pkgconfig
+          ];
+        });
+
         # Expects bash to be at /bin/bash
         company-rtags = markBroken super.company-rtags;
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 44c0e02ebbc..871fe950cf1 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -17961,7 +17961,7 @@ in
       inherit
         autoconf automake editorconfig-core-c git libffi libpng pkgconfig
         poppler rtags w3m zlib substituteAll rustPlatform cmake llvmPackages
-        libtool zeromq;
+        libtool zeromq openssl;
     };
   };