diff --git a/configure b/configure
index 86216f9..3692924 100755
--- a/configure
+++ b/configure
@@ -869,6 +869,7 @@
 UMEM_LIBS
 HasUMEM_FALSE
 HasUMEM_TRUE
+has_jemalloc
 GOMP_LIBS
 WITH_MAGICK_PLUS_PLUS_FALSE
 WITH_MAGICK_PLUS_PLUS_TRUE
@@ -1164,6 +1165,8 @@
 with_perl_options
 with_umem
 with_libstdc
+with_jemalloc_prefix
+with_jemalloc
 with_bzlib
 with_x
 with_zlib
@@ -1935,6 +1938,9 @@
                           PerlMagick build file
   --with-umem             enable umem memory allocation library support
   --with-libstdc=DIR      use libstdc++ in DIR (for GNU C++)
+  --with-jemalloc-prefix=PREFIX
+                          Specify the jemalloc prefix [default=""]
+  --with-jemalloc=DIR     use a specific jemalloc library
   --without-bzlib         disable BZLIB support
   --with-x                use the X Window System
   --without-zlib          disable ZLIB support
@@ -3698,7 +3704,7 @@
 
 MAGICK_VERSION=7.0.0-0
 
-MAGICK_SVN_REVISION=16900:16901
+MAGICK_SVN_REVISION=16921:16931M
 
 
 # Substitute library versioning
@@ -26595,8 +26601,150 @@
 fi
 
 
+#
+# Check for jemalloc().
+#
 
 
+# Check whether --with-jemalloc-prefix was given.
+if test "${with_jemalloc_prefix+set}" = set; then :
+  withval=$with_jemalloc_prefix;
+  jemalloc_prefix="$withval"
+
+else
+
+  if test "`uname -s`" = "Darwin"; then
+    jemalloc_prefix="je_"
+  else
+    jemalloc_prefix=""
+  fi
+
+
+fi
+
+
+cat >>confdefs.h <<_ACEOF
+#define prefix_jemalloc ${jemalloc_prefix}
+_ACEOF
+
+
+enable_jemalloc=no
+
+# Check whether --with-jemalloc was given.
+if test "${with_jemalloc+set}" = set; then :
+  withval=$with_jemalloc;
+  if test "$withval" != "no"; then
+    if test "x${enable_tcmalloc}" = "xyes"; then
+      as_fn_error $? "Cannot compile with both jemalloc and tcmalloc" "$LINENO" 5
+    fi
+    enable_jemalloc=yes
+    jemalloc_base_dir="$withval"
+    case "$withval" in
+      yes)
+        jemalloc_base_dir="/usr"
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking checking for jemalloc includes standard directories" >&5
+$as_echo_n "checking checking for jemalloc includes standard directories... " >&6; }
+	;;
+      *":"*)
+        jemalloc_include="`echo $withval |sed -e 's/:.*$//'`"
+        jemalloc_ldflags="`echo $withval |sed -e 's/^.*://'`"
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking checking for jemalloc includes in $jemalloc_include libs in $jemalloc_ldflags" >&5
+$as_echo_n "checking checking for jemalloc includes in $jemalloc_include libs in $jemalloc_ldflags... " >&6; }
+        ;;
+      *)
+        jemalloc_include="$withval/include"
+        jemalloc_ldflags="$withval/lib"
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking checking for jemalloc includes in $withval" >&5
+$as_echo_n "checking checking for jemalloc includes in $withval... " >&6; }
+        ;;
+    esac
+  fi
+
+fi
+
+
+has_jemalloc=0
+if test "$enable_jemalloc" != "no"; then
+  jemalloc_have_headers=0
+  jemalloc_have_libs=0
+  if test "$jemalloc_base_dir" != "/usr"; then
+    CFLAGS="${CFLAGS} -I${jemalloc_include}"
+    LDFLAGS="${LDFLAGS} -L${jemalloc_ldflags}"
+    LIBTOOL_LINK_FLAGS="${LIBTOOL_LINK_FLAGS} -R${jemalloc_ldflags}"
+  fi
+  func="${jemalloc_prefix}malloc_stats_print"
+  as_ac_Lib=`$as_echo "ac_cv_lib_jemalloc_${func}" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${func} in -ljemalloc" >&5
+$as_echo_n "checking for ${func} in -ljemalloc... " >&6; }
+if eval \${$as_ac_Lib+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ljemalloc  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char ${func} ();
+int
+main ()
+{
+return ${func} ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  eval "$as_ac_Lib=yes"
+else
+  eval "$as_ac_Lib=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+eval ac_res=\$$as_ac_Lib
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if eval test \"x\$"$as_ac_Lib"\" = x"yes"; then :
+  jemalloc_have_libs=1
+fi
+
+  if test "$jemalloc_have_libs" != "0"; then
+    for ac_header in jemalloc/jemalloc.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "jemalloc/jemalloc.h" "ac_cv_header_jemalloc_jemalloc_h" "$ac_includes_default"
+if test "x$ac_cv_header_jemalloc_jemalloc_h" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_JEMALLOC_JEMALLOC_H 1
+_ACEOF
+ jemalloc_have_headers=1
+fi
+
+done
+
+  fi
+  if test "$jemalloc_have_headers" != "0"; then
+    has_jemalloc=1
+    LIBS="${LIBS} -ljemalloc"
+
+$as_echo "#define has_jemalloc 1" >>confdefs.h
+
+  else
+    as_fn_error $? "Couldn't find a jemalloc installation" "$LINENO" 5
+  fi
+fi
+
+
+if test "x$jemalloc_have_libs" != "x0"; then :
+  JE_LIBS="-ljemalloc"
+fi
+
 #
 # Check for umem.
 #
@@ -35924,9 +36072,9 @@
 #
 
 if test "$build_modules" != 'no'; then
-    MAGICK_DEP_LIBS="$USER_LIBS $LCMS_LIBS $FREETYPE_LIBS $LQR_LIBS $FFTW_LIBS $FONTCONFIG_LIBS $XEXT_LIBS $IPC_LIBS $X11_LIBS $XT_LIBS $LZMA_LIBS $BZLIB_LIBS $ZLIB_LIBS $LTDL_LIBS $GDI32_LIBS $MATH_LIBS $GOMP_LIBS $CL_LIBS $UMEM_LIBS $THREAD_LIBS"
+    MAGICK_DEP_LIBS="$USER_LIBS $LCMS_LIBS $FREETYPE_LIBS $LQR_LIBS $FFTW_LIBS $FONTCONFIG_LIBS $XEXT_LIBS $IPC_LIBS $X11_LIBS $XT_LIBS $LZMA_LIBS $BZLIB_LIBS $ZLIB_LIBS $LTDL_LIBS $GDI32_LIBS $MATH_LIBS $GOMP_LIBS $CL_LIBS $UMEM_LIBS $JE_LIBS $THREAD_LIBS"
 else
-    MAGICK_DEP_LIBS="$USER_LIBS $JBIG_LIBS $LCMS_LIBS $TIFF_LIBS $FREETYPE_LIBS $JPEG_LIBS $GS_LIBS $LQR_LIBS $PNG_LIBS $AUTOTRACE_LIBS $DJVU_LIBS $FFTW_LIBS $FPX_LIBS $FONTCONFIG_LIBS $WEBP_LIBS $WMF_LIBS $DPS_LIBS $XEXT_LIBS $XT_LIBS $IPC_LIBS $X11_LIBS $LZMA_LIBS $BZLIB_LIBS $OPENEXR_LIBS $OPENJPEG_LIBS $PANGO_LIBS $RSVG_LIBS $XML_LIBS $GVC_LIBS $ZLIB_LIBS $GDI32_LIBS $MATH_LIBS $GOMP_LIBS $CL_LIBS $UMEM_LIBS $THREAD_LIBS"
+    MAGICK_DEP_LIBS="$USER_LIBS $JBIG_LIBS $LCMS_LIBS $TIFF_LIBS $FREETYPE_LIBS $JPEG_LIBS $GS_LIBS $LQR_LIBS $PNG_LIBS $AUTOTRACE_LIBS $DJVU_LIBS $FFTW_LIBS $FPX_LIBS $FONTCONFIG_LIBS $WEBP_LIBS $WMF_LIBS $DPS_LIBS $XEXT_LIBS $XT_LIBS $IPC_LIBS $X11_LIBS $LZMA_LIBS $BZLIB_LIBS $OPENEXR_LIBS $OPENJPEG_LIBS $PANGO_LIBS $RSVG_LIBS $XML_LIBS $GVC_LIBS $ZLIB_LIBS $GDI32_LIBS $MATH_LIBS $GOMP_LIBS $CL_LIBS $UMEM_LIBS $JE_LIBS $THREAD_LIBS"
 fi