diff --git a/pkgs/by-name/ze/zeromq/package.nix b/pkgs/by-name/ze/zeromq/package.nix
index 918099c8b624..cc6869e87bc9 100644
--- a/pkgs/by-name/ze/zeromq/package.nix
+++ b/pkgs/by-name/ze/zeromq/package.nix
@@ -30,14 +30,26 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-q2h5y0Asad+fGB9haO4Vg7a1ffO2JSb7czzlhmT3VmI=";
   };
 
-  # Use proper STREQUAL instead of EQUAL to compare strings
-  # See: https://github.com/zeromq/libzmq/pull/4711
   patches = [
+    # Use proper STREQUAL instead of EQUAL to compare strings
+    # See: https://github.com/zeromq/libzmq/pull/4711
     (fetchpatch {
       url = "https://github.com/zeromq/libzmq/pull/4711/commits/55bd6b3df06734730d3012c17bc26681e25b549d.patch";
       hash = "sha256-/FVah+s7f1hWXv3MXkYfIiV1XAiMVDa0tmt4BQmSgmY=";
       name = "cacheline_undefined.patch";
     })
+
+    # Fix the build with CMake 4.
+    (fetchpatch {
+      name = "zeromq-fix-cmake-4-1.patch";
+      url = "https://github.com/zeromq/libzmq/commit/34f7fa22022bed9e0e390ed3580a1c83ac4a2834.patch";
+      hash = "sha256-oauAZV6pThplcn2v9mQxhxlUhYgpbly0JBLYik+zoJE=";
+    })
+    (fetchpatch {
+      name = "zeromq-fix-cmake-4-2.patch";
+      url = "https://github.com/zeromq/libzmq/commit/b91a6201307b72beb522300366aad763d19b1456.patch";
+      hash = "sha256-FKvZi7pTUx+wLUR8Suf+pRFg8I5OHpJ93gEmTxUrmO4=";
+    })
   ];
 
   strictDeps = true;