diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2e26ea68d..b07308f18 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -424,7 +424,7 @@ jobs:
             opencolorio_ver: v2.4.2
             openexr_ver: v3.3.3
             openimageio_ver: release
-            pybind11_ver: v2.13.6
+            pybind11_ver: v3.0.0
             python_ver: "3.12"
             simd: avx2,f16c
             batched: b8_AVX2,b8_AVX512,b16_AVX512
@@ -460,7 +460,7 @@ jobs:
             opencolorio_ver: v2.2.1
             openexr_ver: v3.1.11
             openimageio_ver: release
-            pybind11_ver: v2.9.2
+            pybind11_ver: v2.13.6
             python_ver: "3.10"
             simd: avx2,f16c
             batched: b8_AVX2,b8_AVX512,b16_AVX512
@@ -532,22 +532,23 @@ jobs:
             cc_compiler: clang
             cxx_compiler: clang++
             cxx_std: 17
+            openimageio_ver: dev-3.0
             python_ver: "3.13"
             aclang: 14
             ctest_test_timeout: 120
             setenvs: export HOMEBREW_PREFIX=/usr/local
-                            EXTRA_BREW_PACKAGES="openimageio"
                             LLVMBREWVER="@17"
+                            USE_OPENVDB=0
           - desc: MacOS-14-ARM llvm19 oiio-release
             runner: macos-14
             nametag: macos14-arm-p313
             cc_compiler: clang
             cxx_compiler: clang++
             cxx_std: 17
+            openimageio_ver: main
             python_ver: "3.13"
             aclang: 15
-            setenvs: export EXTRA_BREW_PACKAGES="openimageio"
-                            LLVMBREWVER="@19"
+            setenvs: export LLVMBREWVER="@19"
           - desc: MacOS-15-ARM aclang16/C++17/py3.13 llvm19 oiio-main
             runner: macos-15
             nametag: macos15-arm-py313
diff --git a/INSTALL.md b/INSTALL.md
index ad495a1b0..70b41cf01 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -70,7 +70,7 @@ NEW or CHANGED minimum dependencies since the last major release are **bold**.
 * (optional) Python: If you are building the Python bindings or running the
   testsuite:
     * **Python >= 3.7** (tested through 3.13)
-    * **pybind11 >= 2.7** (tested through 2.13)
+    * **pybind11 >= 2.7** (tested through 3.0)
     * NumPy (tested through 2.2.4)
 * (optional) Qt5 >= 5.6 or Qt6 (tested Qt5 through 5.15 and Qt6 through 6.8).
   If not found at build time, the `osltoy` application will be disabled.
diff --git a/src/build-scripts/build_openimageio.bash b/src/build-scripts/build_openimageio.bash
index ed17e1860..27f0f0423 100755
--- a/src/build-scripts/build_openimageio.bash
+++ b/src/build-scripts/build_openimageio.bash
@@ -22,7 +22,6 @@ OPENIMAGEIO_CXXFLAGS=${OPENIMAGEIO_CXXFLAGS:=""}
 BASEDIR=$PWD
 
 pwd
-echo "Building OpenImageIO ${OPENIMAGEIO_VERSION}"
 echo "OpenImageIO build dir will be: ${OPENIMAGEIO_BUILD_DIR}"
 echo "OpenImageIO install dir will be: ${OPENIMAGEIO_INSTALL_DIR}"
 echo "OpenImageIO Build type is ${OPENIMAGEIO_BUILD_TYPE}"
@@ -39,7 +38,7 @@ mkdir -p ${OPENIMAGEIO_BUILD_DIR} && true
 pushd $OPENIMAGEIO_SOURCE_DIR
 git fetch --all -p
 git checkout $OPENIMAGEIO_VERSION --force
-echo "Building OpenImageIO from commit" `git rev-parse --short HEAD`
+echo "Building OpenImageIO from ${OPENIMAGEIO_REPO} / ${OPENIMAGEIO_VERSION} @ commit" `git rev-parse --short HEAD`
 
 if [[ "$USE_SIMD" != "" ]] ; then
     OPENIMAGEIO_CMAKE_FLAGS+=" -DUSE_SIMD=$USE_SIMD"
diff --git a/src/liboslquery/py_osl.cpp b/src/liboslquery/py_osl.cpp
index 27d2f56a2..56a2f70a2 100644
--- a/src/liboslquery/py_osl.cpp
+++ b/src/liboslquery/py_osl.cpp
@@ -30,7 +30,6 @@ declare_oslqueryparam(py::module& m)
         .def_readwrite("varlenarray", &Parameter::varlenarray)
         .def_readwrite("isstruct", &Parameter::isstruct)
         .def_readwrite("isclosure", &Parameter::isclosure)
-        .def_readwrite("type", &Parameter::type)
         .def_property_readonly(
             "value",
             [](const Parameter& p) {