diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 61b7535f..d0eea9ea 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,11 +42,11 @@ jobs:
             BUILD_COMMAND: sdist
             H5PY_OLDER_VERSION: 2.9.0
 
-          #- name-suffix: "bdist_wheel-h5py_2.9.0"
-          #  os: macos-latest
-          #  python-version: 3.8
-          #  BUILD_COMMAND: bdist_wheel
-          #  H5PY_OLDER_VERSION: 2.9.0
+          - name-suffix: "bdist_wheel-h5py_2.10.0"
+            os: macos-latest
+            python-version: 3.8
+            BUILD_COMMAND: bdist_wheel
+            H5PY_OLDER_VERSION: 2.10.0
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
diff --git a/src/c-blosc/internal-complibs/zlib-1.2.8/gzguts.h b/src/c-blosc/internal-complibs/zlib-1.2.8/gzguts.h
index d87659d0..4bfde10f 100644
--- a/src/c-blosc/internal-complibs/zlib-1.2.8/gzguts.h
+++ b/src/c-blosc/internal-complibs/zlib-1.2.8/gzguts.h
@@ -3,6 +3,10 @@
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
+#ifndef _WIN32
+  #include <unistd.h>
+#endif
+
 #ifdef _LARGEFILE64_SOURCE
 #  ifndef _LARGEFILE_SOURCE
 #    define _LARGEFILE_SOURCE 1