diff --git a/Configure b/Configure
index 74bd9aca0ade74f4f1ac686b2d348dc29b1e9f92..2a8b2251d79129b25a52449e2edaf3049c1167e1 100755
--- a/Configure
+++ b/Configure
@@ -169,6 +169,7 @@ my %table=(
 "solaris-sparcv8-gcc","gcc:-mv8 -O3 -fomit-frame-pointer -Wall -DB_ENDIAN -DBN_DIV2W::-D_REENTRANT::-lsocket -lnsl -ldl:BN_LLONG RC4_CHAR RC4_CHUNK DES_UNROLL BF_PTR:asm/sparcv8.o:::::::::dlfcn:solaris-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
 # -m32 should be safe to add as long as driver recognizes -mcpu=ultrasparc
 "solaris-sparcv9-gcc","gcc:-m32 -mcpu=ultrasparc -O3 -fomit-frame-pointer -Wall -DB_ENDIAN -DBN_DIV2W::-D_REENTRANT:ULTRASPARC:-lsocket -lnsl -ldl:BN_LLONG RC4_CHAR RC4_CHUNK DES_UNROLL BF_PTR:asm/sparcv8plus.o:::asm/md5-sparcv8plus.o::::::dlfcn:solaris-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
+"solaris64-sparcv9-gcc31","gcc:-mcpu=ultrasparc -m64 -O3 -fomit-frame-pointer -Wall -DB_ENDIAN::-D_REENTRANT:ULTRASPARC:-lsocket -lnsl -ldl:SIXTY_FOUR_BIT_LONG RC4_CHAR RC4_CHUNK DES_INT DES_PTR DES_RISC1 DES_UNROLL BF_PTR::::asm/md5-sparcv9.o::::::dlfcn:solaris-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
 # gcc pre-2.8 doesn't understand -mcpu=ultrasparc, so fall down to -mv8
 # but keep the assembler modules.
 "solaris-sparcv9-gcc27","gcc:-mv8 -O3 -fomit-frame-pointer -Wall -DB_ENDIAN -DBN_DIV2W::-D_REENTRANT:ULTRASPARC:-lsocket -lnsl -ldl:BN_LLONG RC4_CHAR RC4_CHUNK DES_UNROLL BF_PTR:asm/sparcv8plus-gcc27.o:::asm/md5-sparcv8plus-gcc27.o::::::dlfcn:solaris-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",