diff --git a/pkgs/development/libraries/howard-hinnant-date/default.nix b/pkgs/development/libraries/howard-hinnant-date/default.nix
index 4f3e74f5d8a8..f7af4975de56 100644
--- a/pkgs/development/libraries/howard-hinnant-date/default.nix
+++ b/pkgs/development/libraries/howard-hinnant-date/default.nix
@@ -33,6 +33,13 @@ stdenv.mkDerivation rec {
       src = ./make-zoneinfo-available.diff;
       inherit tzdata;
     })
+    # The reported version to cmake's find_package() is 3.0.0, but the actual
+    # version is 3.0.1. This patch fixes that.
+    (fetchpatch {
+      name = "fix-cmake-version.patch";
+      url = "https://github.com/HowardHinnant/date/commit/2e19c006e2218447ee31f864191859517603f59f.patch";
+      hash = "sha256-SRAWrwv64ap3Qh3RlhwqgS0L2YsrjqVSgw6iH3KlWvk=";
+    })
   ];
 
   # Tweaks to fix undefined variable substitutions