diff --git a/pkgs/development/libraries/unixODBCDrivers/default.nix b/pkgs/development/libraries/unixODBCDrivers/default.nix
index 69edb001df39..42b9e2682686 100644
--- a/pkgs/development/libraries/unixODBCDrivers/default.nix
+++ b/pkgs/development/libraries/unixODBCDrivers/default.nix
@@ -42,13 +42,13 @@
 
   mariadb = stdenv.mkDerivation rec {
     pname = "mariadb-connector-odbc";
-    version = "3.1.20";
+    version = "3.2.6";
 
     src = fetchFromGitHub {
       owner = "mariadb-corporation";
       repo = "mariadb-connector-odbc";
       rev = version;
-      hash = "sha256-l+HlS7/A0shwsEXYKDhi+QCmwHaMTeKrtcvo9yYpYws=";
+      hash = "sha256-FdnA3/xDxnk2910LCMPWQTcUUSYfUsnnZ3Hqj0uey5s=";
       # this driver only seems to build correctly when built against the mariadb-connect-c subrepo
       # (see https://github.com/NixOS/nixpkgs/issues/73258)
       fetchSubmodules = true;
diff --git a/pkgs/servers/sql/mariadb/connector-c/default.nix b/pkgs/servers/sql/mariadb/connector-c/default.nix
index f3ae54e43a5a..969cf26b5b4c 100644
--- a/pkgs/servers/sql/mariadb/connector-c/default.nix
+++ b/pkgs/servers/sql/mariadb/connector-c/default.nix
@@ -29,12 +29,19 @@ stdenv.mkDerivation {
     inherit hash;
   };
 
-  patches = [
+  patches = lib.optionals (lib.versionOlder version "3.4") [
     # fix compilation against gcc15
     (fetchpatch {
       url = "https://github.com/mariadb-corporation/mariadb-connector-c/commit/e8448137f3365568090d5c0d4051039ddc1cdb6f.patch";
       hash = "sha256-aDbaaJA8DxGG5RrOa+CHhk4wuzlBy5tWyS+f/zVYU0c=";
     })
+
+    # Fix the build with CMake 4.
+    (fetchpatch {
+      name = "mariadb-connector-c-fix-cmake-4.patch";
+      url = "https://github.com/mariadb-corporation/mariadb-connector-c/commit/598dc3d2d7a63e5d250421dd0ea88be55ea8511f.patch";
+      hash = "sha256-HojNRobguBmtpEdr2lVi/MpcoDAsZnb3+tw/pt376es=";
+    })
   ];
 
   outputs = [