diff --git a/config/cmake/HDFCompilerFlags.cmake b/config/cmake/HDFCompilerFlags.cmake
index b0537b34f82..78aa3c37027 100644
--- a/config/cmake/HDFCompilerFlags.cmake
+++ b/config/cmake/HDFCompilerFlags.cmake
@@ -322,12 +322,6 @@ if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
     #  ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/gnu-warnings/no-developer-12")
     endif ()
   endif ()
-
-  # Append more extra warning flags that only gcc 13.x+ knows about
-  # or which should only be enabled for gcc 13.x+
-  if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 13.0)
-    ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/gnu-warnings/13")
-  endif ()
 endif ()
 
 #-----------------------------------------------------------------------------
diff --git a/config/gnu-flags b/config/gnu-flags
index 12065ed508c..658475c0aba 100644
--- a/config/gnu-flags
+++ b/config/gnu-flags
@@ -277,16 +277,6 @@ if test "X-gcc" = "X-$cc_vendor"; then
         DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS $(load_gnu_arguments developer-10)"
     fi
 
-    # gcc >= 12
-    if test $cc_vers_major -ge 12; then
-        DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS $(load_gnu_arguments developer-12)"
-    fi
-
-    # gcc >= 13
-    if test $cc_vers_major -ge 13; then
-        H5_CFLAGS="$H5_CFLAGS $(load_gnu_arguments 13)"
-    fi
-
     #################
     # Flags are set #
     #################
diff --git a/config/gnu-warnings/13 b/config/gnu-warnings/13
deleted file mode 100644
index 832e6cce68c..00000000000
--- a/config/gnu-warnings/13
+++ /dev/null
@@ -1,2 +0,0 @@
--Wxor-used-as-pow
--Wenum-int-mismatch