diff --git a/Doc/deprecations/c-api-pending-removal-in-3.15.rst b/Doc/deprecations/c-api-pending-removal-in-3.15.rst
index fcb703e66fe9eb..7d46d57dd2f5e6 100644
--- a/Doc/deprecations/c-api-pending-removal-in-3.15.rst
+++ b/Doc/deprecations/c-api-pending-removal-in-3.15.rst
@@ -1,7 +1,6 @@
 Pending Removal in Python 3.15
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-* The bundled copy of ``libmpdecimal``.
 * The :c:func:`PyImport_ImportModuleNoBlock`:
   Use :c:func:`PyImport_ImportModule` instead.
 * :c:func:`PyWeakref_GetObject` and :c:func:`PyWeakref_GET_OBJECT`:
diff --git a/Doc/deprecations/c-api-pending-removal-in-3.16.rst b/Doc/deprecations/c-api-pending-removal-in-3.16.rst
new file mode 100644
index 00000000000000..9453f83799c43d
--- /dev/null
+++ b/Doc/deprecations/c-api-pending-removal-in-3.16.rst
@@ -0,0 +1,4 @@
+Pending removal in Python 3.16
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+* The bundled copy of ``libmpdec``.
diff --git a/Doc/whatsnew/3.12.rst b/Doc/whatsnew/3.12.rst
index 52b193a0676451..b9ce76c64cb715 100644
--- a/Doc/whatsnew/3.12.rst
+++ b/Doc/whatsnew/3.12.rst
@@ -2231,6 +2231,8 @@ Deprecated
 
 .. include:: ../deprecations/c-api-pending-removal-in-3.15.rst
 
+.. include:: ../deprecations/c-api-pending-removal-in-3.16.rst
+
 .. include:: ../deprecations/c-api-pending-removal-in-future.rst
 
 Removed
diff --git a/Doc/whatsnew/3.13.rst b/Doc/whatsnew/3.13.rst
index 1b969b3fd2ec54..c7a31853426b54 100644
--- a/Doc/whatsnew/3.13.rst
+++ b/Doc/whatsnew/3.13.rst
@@ -2554,6 +2554,8 @@ Deprecated C APIs
 
 .. include:: ../deprecations/c-api-pending-removal-in-3.15.rst
 
+.. include:: ../deprecations/c-api-pending-removal-in-3.16.rst
+
 .. include:: ../deprecations/c-api-pending-removal-in-future.rst
 
 .. _pythoncapi-compat project: https://github.com/python/pythoncapi-compat/
@@ -2598,7 +2600,7 @@ Build Changes
 
 * The :file:`configure` option :option:`--with-system-libmpdec`
   now defaults to ``yes``.
-  The bundled copy of ``libmpdecimal`` will be removed in Python 3.15.
+  The bundled copy of ``libmpdec`` will be removed in Python 3.16.
 
 * Python built with :file:`configure` :option:`--with-trace-refs`
   (tracing references) is now ABI compatible with the Python release build
diff --git a/configure b/configure
index a0da75f9bec61b..bd0a5316305388 100755
--- a/configure
+++ b/configure
@@ -14837,14 +14837,14 @@ LIBS=$save_LIBS
 
 
 else $as_nop
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: the bundled copy of libmpdecimal is scheduled for removal in Python 3.15; consider using a system installed mpdecimal library." >&5
-printf "%s\n" "$as_me: WARNING: the bundled copy of libmpdecimal is scheduled for removal in Python 3.15; consider using a system installed mpdecimal library." >&2;}
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: the bundled copy of libmpdec is scheduled for removal in Python 3.16; consider using a system installed mpdecimal library." >&5
+printf "%s\n" "$as_me: WARNING: the bundled copy of libmpdec is scheduled for removal in Python 3.16; consider using a system installed mpdecimal library." >&2;}
 fi
 
 if test "$with_system_libmpdec" = "yes" && test "$have_mpdec" = "no"
 then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: no system libmpdecimal found; falling back to bundled libmpdecimal (deprecated and scheduled for removal in Python 3.15)" >&5
-printf "%s\n" "$as_me: WARNING: no system libmpdecimal found; falling back to bundled libmpdecimal (deprecated and scheduled for removal in Python 3.15)" >&2;}
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: no system libmpdec found; falling back to bundled libmpdec (deprecated and scheduled for removal in Python 3.16)" >&5
+printf "%s\n" "$as_me: WARNING: no system libmpdec found; falling back to bundled libmpdec (deprecated and scheduled for removal in Python 3.16)" >&2;}
        LIBMPDEC_CFLAGS="-I\$(srcdir)/Modules/_decimal/libmpdec"
           LIBMPDEC_LIBS="-lm \$(LIBMPDEC_A)"
           LIBMPDEC_INTERNAL="\$(LIBMPDEC_HEADERS) \$(LIBMPDEC_A)"
diff --git a/configure.ac b/configure.ac
index 9c67dab2b46e73..51235fe8d70d65 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4086,13 +4086,13 @@ AS_VAR_IF([with_system_libmpdec], [yes],
       [have_mpdec=no])
   ])],
   [AC_MSG_WARN([m4_normalize([
-     the bundled copy of libmpdecimal is scheduled for removal in Python 3.15;
+     the bundled copy of libmpdec is scheduled for removal in Python 3.16;
      consider using a system installed mpdecimal library.])])])
 
 AS_IF([test "$with_system_libmpdec" = "yes" && test "$have_mpdec" = "no"],
       [AC_MSG_WARN([m4_normalize([
-         no system libmpdecimal found; falling back to bundled libmpdecimal
-         (deprecated and scheduled for removal in Python 3.15)])])
+         no system libmpdec found; falling back to bundled libmpdec
+         (deprecated and scheduled for removal in Python 3.16)])])
        USE_BUNDLED_LIBMPDEC()])
 
 # Disable forced inlining in debug builds, see GH-94847