diff --git a/pkgs/games/openrct2/default.nix b/pkgs/games/openrct2/default.nix
index cafa51c8342f..ade022cefe9d 100644
--- a/pkgs/games/openrct2/default.nix
+++ b/pkgs/games/openrct2/default.nix
@@ -5,32 +5,37 @@
 }:
 
 let
-  version = "0.3.4.1";
+  openrct2-version = "0.3.5";
+
+  # Those versions MUST match the pinned versions within the CMakeLists.txt
+  # file. The REPLAYS repository from the CMakeLists.txt is not necessary.
+  objects-version = "1.0.21";
+  title-sequences-version = "0.1.2c";
 
   openrct2-src = fetchFromGitHub {
     owner = "OpenRCT2";
     repo = "OpenRCT2";
-    rev = "v${version}";
-    sha256 = "0zjqn47pbgd2nrrbdl3lqk1mcdvwvvpjby2g0gfv6ssfw72fji7d";
+    rev = "v${openrct2-version}";
+    sha256 = "0xmj0qs49d1xlc8lbspr1vg66i0jdjlhcfxci72x6knjvd0vcgz0";
   };
 
   objects-src = fetchFromGitHub {
     owner = "OpenRCT2";
     repo = "objects";
-    rev = "v1.0.21";
+    rev = "v${objects-version}";
     sha256 = "0r2vp2y67jc1mpfl4j83sx5khvvaddx7xs26ppkigmr2d1xpxgr7";
   };
 
   title-sequences-src = fetchFromGitHub {
     owner = "OpenRCT2";
     repo = "title-sequences";
-    rev = "v0.1.2c";
+    rev = "v${title-sequences-version}";
     sha256 = "1qdrm4q75bznmgdrpjdaiqvbf3q4vwbkkmls45izxvyg1djrpsdf";
   };
 in
 stdenv.mkDerivation {
   pname = "openrct2";
-  inherit version;
+  version = openrct2-version;
 
   src = openrct2-src;
 
@@ -68,6 +73,15 @@ stdenv.mkDerivation {
     cp -r ${title-sequences-src} $sourceRoot/data/sequence
   '';
 
+  preConfigure = ''
+    # Verify that the correct version of the third party repositories is used.
+
+    grep -q '^set(OBJECTS_VERSION "${objects-version}")$' CMakeLists.txt \
+      || (echo "OBJECTS_VERSION differs!"; exit 1)
+    grep -q '^set(TITLE_SEQUENCE_VERSION "${title-sequences-version}")$' CMakeLists.txt \
+      || (echo "TITLE_SEQUENCE_VERSION differs!"; exit 1)
+  '';
+
   preFixup = "ln -s $out/share/openrct2 $out/bin/data";
 
   meta = with lib; {