diff --git a/CMakeFilters.cmake b/CMakeFilters.cmake
index e7df309ede7..5f74b7647ac 100644
--- a/CMakeFilters.cmake
+++ b/CMakeFilters.cmake
@@ -83,7 +83,7 @@ endif ()
 if(NOT DEFINED ZLIBNG_PACKAGE_NAME)
   set(ZLIBNG_PACKAGE_NAME "zlib-ng")
 endif ()
-option (HDF5_ENABLE_ZLIB_SUPPORT "Enable Zlib Filters" ON)
+option (HDF5_ENABLE_ZLIB_SUPPORT "Enable Zlib Filters" OFF)
 if (HDF5_ENABLE_ZLIB_SUPPORT)
   if (NOT H5_ZLIB_HEADER)
     if (NOT ZLIB_USE_EXTERNAL)
diff --git a/HDF5Examples/C/H5FLT/tfiles/h5ex_d_zfp.ddl b/HDF5Examples/C/H5FLT/tfiles/h5ex_d_zfp.ddl
index a8e66c08054..8dadf939143 100644
--- a/HDF5Examples/C/H5FLT/tfiles/h5ex_d_zfp.ddl
+++ b/HDF5Examples/C/H5FLT/tfiles/h5ex_d_zfp.ddl
@@ -10,7 +10,7 @@ GROUP "/" {
       FILTERS {
          USER_DEFINED_FILTER {
             FILTER_ID 32013
-            COMMENT H5Z-ZFP-1.1.1 (ZFP-1.0.0) github.com/LLNL/H5Z-ZFP
+            COMMENT H5Z-ZFP-1.1.1 (ZFP-1.0.1) github.com/LLNL/H5Z-ZFP
             PARAMS { XXXX }
          }
       }
diff --git a/config/cmake/scripts/HDF5options.cmake b/config/cmake/scripts/HDF5options.cmake
index 50bdd844e70..0eed84f764b 100644
--- a/config/cmake/scripts/HDF5options.cmake
+++ b/config/cmake/scripts/HDF5options.cmake
@@ -66,8 +66,8 @@ set (ADD_BUILD_OPTIONS "${ADD_BUILD_OPTIONS} -DHDF5_ALLOW_EXTERNAL_SUPPORT:STRIN
 #set(ENV{SZIP_ROOT} "some_location")
 #set (ADD_BUILD_OPTIONS "${ADD_BUILD_OPTIONS} -DH5_SZIP_LIBRARY:FILEPATH=some_location/lib/szlib.lib -DH5_SZIP_INCLUDE_DIR:PATH=some_location/include")
 
-### disable using ext zlib
-#set (ADD_BUILD_OPTIONS "${ADD_BUILD_OPTIONS} -DHDF5_ENABLE_ZLIB_SUPPORT:BOOL=OFF")
+### enable using ext zlib
+#set (ADD_BUILD_OPTIONS "${ADD_BUILD_OPTIONS} -DHDF5_ENABLE_ZLIB_SUPPORT:BOOL=ON")
 ### disable using ext szip
 #set (ADD_BUILD_OPTIONS "${ADD_BUILD_OPTIONS} -DHDF5_ENABLE_SZIP_SUPPORT:BOOL=OFF")
 #set (ADD_BUILD_OPTIONS "${ADD_BUILD_OPTIONS} -DHDF5_ENABLE_SZIP_ENCODING:BOOL=OFF")
diff --git a/release_docs/INSTALL_CMake.txt b/release_docs/INSTALL_CMake.txt
index 149c7ba6295..12a7e1eec25 100644
--- a/release_docs/INSTALL_CMake.txt
+++ b/release_docs/INSTALL_CMake.txt
@@ -68,7 +68,7 @@ Download from https://github.com/HDFGroup/hdf5/blob/develop/config/cmake/scripts
 External compression plugin libraries from https://github.com/HDFGroup/hdf5_plugins:
     hdf5_plugins.tar.gz
 
-External compression szip and zlib libraries:
+External compression szip and zlib libraries:0
     ZLIB          "https://github.com/madler/zlib/releases/download/v1.3.1/zlib-1.3.1.tar.gz"
     ZLIBNG        "https://github.com/zlib-ng/zlib-ng/archive/refs/tags/2.2.2.tar.gz"
     LIBAEC        "https://github.com/MathisRosenhauer/libaec/releases/download/v1.1.3/libaec-1.1.3.tar.gz"
@@ -939,7 +939,7 @@ if (BUILD_TESTING)
 HDF5_ALLOW_EXTERNAL_SUPPORT "Allow External Library Building (NO GIT TGZ)"  "NO"
 HDF5_ENABLE_PLUGIN_SUPPORT  "Enable PLUGIN Filters"                         OFF
 HDF5_ENABLE_SZIP_SUPPORT    "Use SZip Filter"                               OFF
-HDF5_ENABLE_ZLIB_SUPPORT   "Enable Zlib Filters"                           ON
+HDF5_ENABLE_ZLIB_SUPPORT    "Enable Zlib Filters"                           OFF
 
 if (HDF5_USE_ZLIB_NG)
     ZLIBNG_USE_EXTERNAL     "Use External Library Building for ZLIBNG"      OFF
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
index 3af9b48b26b..ecb6340e7fc 100644
--- a/release_docs/RELEASE.txt
+++ b/release_docs/RELEASE.txt
@@ -50,7 +50,7 @@ New Features
     - Renamed the option: HDF5_ENABLE_Z_LIB_SUPPORT
 
       The option has been renamed to HDF5_ENABLE_ZLIB_SUPPORT to be consistent
-      with the naming of other options.
+      with the naming of other options. Also, the option defaults to OFF.
 
     - Added support for MinGW + MSYS2 when building with CMake