diff --git a/sci-mathematics/calc/calc-2.12.5.3.recipe b/sci-mathematics/calc/calc-2.12.6.3.recipe
similarity index 96%
rename from sci-mathematics/calc/calc-2.12.5.3.recipe
rename to sci-mathematics/calc/calc-2.12.6.3.recipe
index fd5c1fd62..17a527b02 100644
--- a/sci-mathematics/calc/calc-2.12.5.3.recipe
+++ b/sci-mathematics/calc/calc-2.12.6.3.recipe
@@ -7,11 +7,11 @@ In this mode, it accepts commands one at a time, processes them, and displays \
 the answers. In the simplest case, commands are simply expressions which are \
 evaluated."
 HOMEPAGE="http://www.isthe.com/chongo/tech/comp/calc/"
-COPYRIGHT="1999-2016 Landon Curt Noll"
+COPYRIGHT="1999-2017 Landon Curt Noll"
 LICENSE="GNU LGPL v2.1"
-REVISION="2"
+REVISION="1"
 SOURCE_URI="http://www.isthe.com/chongo/src/calc/calc-$portVersion.tar.bz2"
-CHECKSUM_SHA256="0fcf60917efb10aab145f1180c278a3ab63d789aad6d5e5f066a4458b5f9b692"
+CHECKSUM_SHA256="7e7eba580055e53e57cbe147e1955060b0374234ef9b3ec4f29f1cfd8b06a206"
 PATCHES="calc-$portVersion.patchset"
 
 ARCHITECTURES="x86_gcc2 x86 x86_64"
diff --git a/sci-mathematics/calc/patches/calc-2.12.5.3.patchset b/sci-mathematics/calc/patches/calc-2.12.6.3.patchset
similarity index 100%
rename from sci-mathematics/calc/patches/calc-2.12.5.3.patchset
rename to sci-mathematics/calc/patches/calc-2.12.6.3.patchset