diff --git a/Dockerfile b/Dockerfile
index 69dde3a..dc53e48 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,36 +13,36 @@ ENV \
 
 # versions
 ENV \
-  AOM=v3.7.0 \
+  AOM=v3.7.1 \
   FDKAAC=2.0.2 \
   FFMPEG_HARD=6.1 \
   FONTCONFIG=2.14.2 \
   FREETYPE=2.13.2 \
   FRIBIDI=1.0.13 \
-  GMMLIB=22.3.7 \
-  IHD=23.2.4 \
+  GMMLIB=22.3.12 \
+  IHD=23.3.5 \
   KVAZAAR=2.2.0 \
   LAME=3.100 \
   LIBASS=0.17.1 \
-  LIBDRM=2.4.116 \
+  LIBDRM=2.4.118 \
   LIBMFX=22.5.4 \
-  LIBVA=2.19.0 \
+  LIBVA=2.20.0 \
   LIBVDPAU=1.5 \
   LIBVIDSTAB=1.1.1 \
   LIBVMAF=2.3.1 \
   LIBVPL=2023.3.1 \
   NVCODEC=n12.1.14.0 \
   OGG=1.3.5 \
-  ONEVPL=23.2.4 \
+  ONEVPL=23.3.4 \
   OPENCOREAMR=0.1.6 \
   OPENJPEG=2.5.0 \
-  OPUS=1.3.1 \
+  OPUS=1.4 \
   SHADERC=v2023.7 \
   SVTAV1=1.7.0 \
   THEORA=1.1.1 \
   VORBIS=1.3.7 \
   VPX=1.13.1 \
-  VULKANHEADERS=vulkan-sdk-1.3.268.0 \
+  VULKANSDK=vulkan-sdk-1.3.268.0 \
   WEBP=1.3.2 \
   X265=3.5 \
   XVID=1.3.7
@@ -445,7 +445,7 @@ RUN \
   echo "**** grabbing opus ****" && \
   mkdir -p /tmp/opus && \
   curl -Lf \
-    https://archive.mozilla.org/pub/opus/opus-${OPUS}.tar.gz | \
+    https://downloads.xiph.org/releases/opus/opus-${OPUS}.tar.gz | \
     tar -zx --strip-components=1 -C /tmp/opus
 RUN \
   echo "**** compiling opus ****" && \
@@ -564,7 +564,7 @@ RUN \
   echo "**** grabbing vulkan headers ****" && \
   mkdir -p /tmp/vulkan-headers && \
   git clone \
-    --branch ${VULKANHEADERS} \
+    --branch ${VULKANSDK} \
     --depth 1 https://github.com/KhronosGroup/Vulkan-Headers.git \
     /tmp/vulkan-headers
 RUN \
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index e9c9708..3855608 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -13,7 +13,7 @@ ENV \
 
 # versions
 ENV \
-  AOM=v3.7.0 \
+  AOM=v3.7.1 \
   FDKAAC=2.0.2 \
   FFMPEG_HARD=6.1 \
   FREETYPE=2.13.2 \
@@ -21,15 +21,15 @@ ENV \
   KVAZAAR=2.2.0 \
   LAME=3.100 \
   LIBASS=0.17.1 \
-  LIBDRM=2.4.116 \
-  LIBVA=2.19.0 \
+  LIBDRM=2.4.118 \
+  LIBVA=2.20.0 \
   LIBVDPAU=1.5 \
   LIBVIDSTAB=1.1.1 \
   NVCODEC=n12.1.14.0 \
   OGG=1.3.5 \
   OPENCOREAMR=0.1.6 \
   OPENJPEG=2.5.0 \
-  OPUS=1.3.1 \
+  OPUS=1.4 \
   SVTAV1=1.7.0 \
   THEORA=1.1.1 \
   VORBIS=1.3.7 \
@@ -249,7 +249,7 @@ RUN \
   echo "**** grabbing opus ****" && \
   mkdir -p /tmp/opus && \
   curl -Lf \
-    https://archive.mozilla.org/pub/opus/opus-${OPUS}.tar.gz | \
+    https://downloads.xiph.org/releases/opus/opus-${OPUS}.tar.gz | \
     tar -zx --strip-components=1 -C /tmp/opus
 RUN \
   echo "**** compiling opus ****" && \
diff --git a/README.md b/README.md
index 408dcc2..4867e77 100644
--- a/README.md
+++ b/README.md
@@ -130,6 +130,12 @@ docker run --rm -it \
   /config/output.mkv
 ```
 
+### Vulkan support
+
+Preliminary Vulkan support has been added to x86_64, which can be enabled by setting the environment variable `VULKAN_SUPPORT=true`. When enabled, the container will download and install the Vulkan loader and dependencies from the Ubuntu repo prior to running FFmpeg on container start.
+
+Some Vulkan extensions may not yet be available due to installing an older version of MESA and Vulkan loader from the Ubuntu repository.
+
 ## Building locally
 
 If you want to make local modifications to these images for development purposes or just to customize the logic:
@@ -151,7 +157,7 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
-* **20.11.23:** - Add vulkan and shaderc support to x86_64.
+* **22.11.23:** - Add shaderc and (preliminary) Vulkan support (via env var `ENABLE_VULKAN=true`) to x86_64. Bump Intel drivers and other libs.
 * **13.11.23:** - Bump FFmpeg to 6.1.
 * **02.11.23:** - Remove `--enable-small` from ffmpeg build options to add back some features.
 * **05.10.23:** - Add support for SVT-AV1. Update various libraries.
diff --git a/readme-vars.yml b/readme-vars.yml
index 7fd3dc1..e07fe35 100644
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -134,6 +134,12 @@ full_custom_readme: |
     /config/output.mkv
   ```
 
+  ### Vulkan support
+
+  Preliminary Vulkan support has been added to x86_64, which can be enabled by setting the environment variable `ENABLE_VULKAN=true`. When enabled, the container will download and install the Vulkan loader and dependencies from the Ubuntu repo prior to running FFmpeg on container start.
+
+  Some Vulkan extensions may not yet be available due to installing an older version of MESA and Vulkan loader from the Ubuntu repository.
+
   ## Building locally
   
   If you want to make local modifications to these images for development purposes or just to customize the logic:
@@ -155,7 +161,7 @@ full_custom_readme: |
 
   ## Versions
 
-  * **20.11.23:** - Add vulkan and shaderc support to x86_64.
+  * **22.11.23:** - Add shaderc and (preliminary) Vulkan support (via env var `ENABLE_VULKAN=true`) to x86_64. Bump Intel drivers and other libs.
   * **13.11.23:** - Bump FFmpeg to 6.1.
   * **02.11.23:** - Remove `--enable-small` from ffmpeg build options to add back some features.
   * **05.10.23:** - Add support for SVT-AV1. Update various libraries.
diff --git a/root/ffmpegwrapper.sh b/root/ffmpegwrapper.sh
index bb1a19c..1e07e91 100755
--- a/root/ffmpegwrapper.sh
+++ b/root/ffmpegwrapper.sh
@@ -70,4 +70,12 @@ do
     fi
 done
 
+## vulkan support ##
+if [[ "${ENABLE_VULKAN}" = "true" ]]; then
+    echo "**** Installing Vulkan dependencies ****"
+    apt-get update
+    apt-get install -y libvulkan1
+    echo "**** Vulkan dependencies installed ****"
+fi
+
 run_ffmpeg