diff --git a/scripts/setup.sh b/scripts/setup.sh
index 8179af0..f62deb1 100644
--- a/scripts/setup.sh
+++ b/scripts/setup.sh
@@ -219,13 +219,20 @@ if [ ! -d "openFrameworks" ]; then
   sudo -u "$REAL_USER" mv of_v0.12.1_linux*_release openFrameworks
   sudo -u "$REAL_USER" rm "$OF_FILE"
 
-  # Crucial: Install dependencies from inside the downloaded archive
-  echo "Installing OpenFrameworks dependencies (this matches your release)..."
-  if [ -d "openFrameworks/scripts/linux/debian" ]; then
-    cd openFrameworks/scripts/linux/debian
-    ./install_dependencies.sh -y
-    ./install_codecs.sh
-    cd ../../../
+  # Crucial: Install dependencies manually for Debian Trixie/modern systems
+  # Internal script is obsolete and looks for libgconf-2-4 which is gone.
+  echo "Installing modern dependencies for Debian Trixie..."
+  if command -v apt-get > /dev/null; then
+    DEBIAN_FRONTEND=noninteractive apt-get install -y \
+      libmpg123-dev libsndfile1-dev libopenal-dev libassimp-dev \
+      libtess2-dev libglew-dev libglfw3-dev liburiparser-dev \
+      libcurl4-openssl-dev libpugixml-dev libasound2-dev \
+      libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev \
+      gstreamer1.0-plugins-good gstreamer1.0-plugins-bad \
+      gstreamer1.0-plugins-ugly gstreamer1.0-libav \
+      libgtk-3-dev libboost-filesystem-dev libfreeimage-dev \
+      libfontconfig1-dev libfreetype6-dev libx11-dev \
+      libxrandr-dev libxinerama-dev libxcursor-dev libxi-dev
   fi
 else
   echo "OpenFrameworks already present. Skipping download."