diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 0039b912..46bb07d1 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -5,7 +5,7 @@ This release adds the new plugin `h5z-htj2k`.
 
 - Compression filters and libraries:
 
-  * Added **Htj2k** filter (PR #405)
+  * Added **Htj2k** filter (v0.1.1) and **OpenJPH** (v0.31.0) (PR #405, #409)
   * Updated **blosc2** hdf5 filter (v3.0.1) and **c-blosc2** compression library (v3.3.2) (PR #407)
 
 7.0.0: 25/06/2026
diff --git a/doc/information.rst b/doc/information.rst
index ae066dff..8d66a70e 100644
--- a/doc/information.rst
+++ b/doc/information.rst
@@ -74,7 +74,7 @@ HDF5 compression filters and compression libraries sources were obtained from:
 * `FCIDECOMP plugin <https://gitlab.eumetsat.int/open-source/data-tailor-plugins/fcidecomp>`_
   (`v2.1.1 <https://gitlab.eumetsat.int/open-source/data-tailor-plugins/fcidecomp/-/tree/2.1.1>`_)
   using `CharLS <https://github.com/team-charls/charls>`_ (v2.1.0).
-* `h5z-htj2k plugin <https://github.com/silx-kit/h5z-htj2k>`_ (v0.1.0) using
+* `h5z-htj2k plugin <https://github.com/silx-kit/h5z-htj2k>`_ (v0.1.1) using
   `OpenJPH <https://github.com/aous72/OpenJPH>`_ (v0.31.0).
 * `SZ plugin <https://github.com/szcompressor/SZ2>`_
   (commit `308bd06 <https://github.com/szcompressor/SZ2/tree/308bd06f0040ec0d5c22fb3fcb0428c306ba4df1>`_)
diff --git a/lib/h5z-htj2k/CHANGELOG.md b/lib/h5z-htj2k/CHANGELOG.md
index d5f40bd5..c150889b 100644
--- a/lib/h5z-htj2k/CHANGELOG.md
+++ b/lib/h5z-htj2k/CHANGELOG.md
@@ -1,3 +1,8 @@
+0.1.1 - 2026/08/26
+==================
+
+- Fixed OpenJPH includes to match pkg-config information
+
 0.1.0 - 2026/08/25
 ==================
 
diff --git a/lib/h5z-htj2k/CMakeLists.txt b/lib/h5z-htj2k/CMakeLists.txt
index 513d99be..c117adcb 100644
--- a/lib/h5z-htj2k/CMakeLists.txt
+++ b/lib/h5z-htj2k/CMakeLists.txt
@@ -88,7 +88,7 @@ else()
 
   message(STATUS "Using OpenJPH backend (vendored: ${CMAKE_CURRENT_SOURCE_DIR}/vendored/OpenJPH)")
 
-  set(_backend_include_dirs)
+  set(_backend_include_dirs ${CMAKE_CURRENT_SOURCE_DIR}/vendored/OpenJPH/src/core)
   set(_backend_libs openjph)
 endif()
 
diff --git a/lib/h5z-htj2k/pixi.toml b/lib/h5z-htj2k/pixi.toml
index ebf883e1..d97224e4 100644
--- a/lib/h5z-htj2k/pixi.toml
+++ b/lib/h5z-htj2k/pixi.toml
@@ -1,6 +1,6 @@
 [workspace]
 name = "h5z-htj2k"
-version = "0.1.0"
+version = "0.1.1"
 channels = ["conda-forge"]
 platforms = ["win-64", "linux-64", "osx-arm64"]
 
diff --git a/lib/h5z-htj2k/src/backend_openjph.cpp b/lib/h5z-htj2k/src/backend_openjph.cpp
index 3b07b472..0b80af5b 100644
--- a/lib/h5z-htj2k/src/backend_openjph.cpp
+++ b/lib/h5z-htj2k/src/backend_openjph.cpp
@@ -7,11 +7,11 @@
 #include <cstring>
 #include <exception>
 
-#include "ojph_arch.h"
-#include "ojph_codestream.h"
-#include "ojph_file.h"
-#include "ojph_mem.h"
-#include "ojph_params.h"
+#include "openjph/ojph_arch.h"
+#include "openjph/ojph_codestream.h"
+#include "openjph/ojph_file.h"
+#include "openjph/ojph_mem.h"
+#include "openjph/ojph_params.h"
 
 namespace {
 
diff --git a/setup.py b/setup.py
index 94563320..88865b9f 100644
--- a/setup.py
+++ b/setup.py
@@ -1018,7 +1018,7 @@ def portable_sources(pattern):
 
     config = dict(
         sources=sources,
-        include_dirs=[f"{openjph_dir}/openjph"],
+        include_dirs=[openjph_dir, f"{openjph_dir}/openjph"],
         macros=[("OJPH_DISABLE_SIMD", None), ("_FILE_OFFSET_BITS", 64)],
         cflags=["-O3", "/O2"],
     )
@@ -1453,8 +1453,8 @@ def _get_htj2k_plugin():
         "hdf5plugin.plugins.libh5htj2k",
         sources=[f"{h5z_htj2k_dir}/H5Zhtj2k.c", f"{h5z_htj2k_dir}/backend_openjph.cpp"],
         include_dirs=[h5z_htj2k_dir] + get_clib_config("openjph", "include_dirs"),
-        libraries=get_clib_config("openjph", "extra_link_args"),
         extra_compile_args=extra_compile_args,
+        extra_link_args=get_clib_config("openjph", "extra_link_args"),
         cpp14_required=True,
     )