diff --git a/pkgs/development/libraries/ogre/default.nix b/pkgs/development/libraries/ogre/default.nix
index f6cd2987aa0d..b4fae743ef8a 100644
--- a/pkgs/development/libraries/ogre/default.nix
+++ b/pkgs/development/libraries/ogre/default.nix
@@ -34,7 +34,16 @@
 }:
 
 let
-  common = { version, hash }: stdenv.mkDerivation {
+  common = { version, hash, imguiVersion, imguiHash }:
+  let
+    imgui.src = fetchFromGitHub {
+      owner = "ocornut";
+      repo = "imgui";
+      rev = "v${imguiVersion}";
+      hash = imguiHash;
+    };
+  in
+  stdenv.mkDerivation {
     pname = "ogre";
     inherit version;
 
@@ -45,6 +54,12 @@ let
       inherit hash;
     };
 
+    postPatch = ''
+      mkdir -p build
+      cp -R ${imgui.src} build/imgui-${imguiVersion}
+      chmod -R u+w build/imgui-${imguiVersion}
+    '';
+
     nativeBuildInputs = [
       cmake
       pkg-config
@@ -80,11 +95,10 @@ let
     ];
 
     cmakeFlags = [
-      "-DOGRE_BUILD_COMPONENT_OVERLAY_IMGUI=FALSE"
-      "-DOGRE_BUILD_DEPENDENCIES=OFF"
-      "-DOGRE_BUILD_SAMPLES=${toString withSamples}"
+      (lib.cmakeBool "OGRE_BUILD_DEPENDENCIES" false)
+      (lib.cmakeBool "OGRE_BUILD_SAMPLES" withSamples)
     ] ++ lib.optionals stdenv.isDarwin [
-      "-DOGRE_BUILD_LIBS_AS_FRAMEWORKS=FALSE"
+      (lib.cmakeBool "OGRE_BUILD_LIBS_AS_FRAMEWORKS" false)
     ];
 
     meta = {
@@ -100,10 +114,16 @@ in
   ogre_14 = common {
     version = "14.1.2";
     hash = "sha256-qPoC5VXA9IC1xiFLrvE7cqCZFkuiEM0OMowUXDlmhF4=";
+    # https://github.com/OGRECave/ogre/blob/v14.1.2/Components/Overlay/CMakeLists.txt
+    imguiVersion = "1.89.8";
+    imguiHash = "sha256-pkEm7+ZBYAYgAbMvXhmJyxm6DfyQWkECTXcTHTgfvuo=";
   };
 
   ogre_13 = common {
     version = "13.6.5";
     hash = "sha256-8VQqePrvf/fleHijVIqWWfwOusGjVR40IIJ13o+HwaE=";
+    # https://github.com/OGRECave/ogre/blob/v13.6.5/Components/Overlay/CMakeLists.txt
+    imguiVersion = "1.87";
+    imguiHash = "sha256-H5rqXZFw+2PfVMsYvAK+K+pxxI8HnUC0GlPhooWgEYM=";
   };
 }