diff --git a/.gitignore b/.gitignore
index 9a6fc0c..bf7e450 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@ clog
 /calc-2.12.5.3.tar.bz2
 /calc-2.12.5.4.tar.bz2
 /calc-2.12.5.6.tar.bz2
+/calc-2.12.6.0.tar.bz2
diff --git a/calc.spec b/calc.spec
index a64b8fc..49a546f 100644
--- a/calc.spec
+++ b/calc.spec
@@ -15,13 +15,14 @@ License:       LGPLv2
 %endif
 
 Name:          calc
-Version:       2.12.5.6
+Version:       2.12.6.0
 Release:       1%{?dist}
 Summary:       Arbitrary precision arithmetic system and calculator
 
 Group:         Applications/Engineering
+# Also, https://github.com/lcn2/calc
 URL:           http://isthe.com/chongo/tech/comp/calc/
-Source0:       http://www.isthe.com/chongo/src/calc/calc-%{version}.tar.bz2
+Source0:       https://github.com/lcn2/calc/releases/download/2.12.6.0/calc-%{version}.tar.bz2
 Source1:       calc-converted-to-gpl.txt
 Source2:       calc-COPYING-GPL
 
@@ -35,7 +36,7 @@ BuildRequires: sed, util-linux
 BuildRequires: ncurses-devel >= 5.2-26, readline-devel >= 5.2-3
 %endif
 
-Requires:      less >= 358
+Recommends:    less >= 358
 Recommends:    %{name}-stdrc
 
 %description
@@ -180,7 +181,7 @@ rm -rf %{buildroot}
 %doc BUGS CHANGES
 %license COPYING COPYING-GPL
 %else
-%doc BUGS CHANGES
+%doc BUGS CHANGES README.FIRST
 %license COPYING-LGPL
 %endif
 %{_bindir}/calc
@@ -231,6 +232,11 @@ rm -rf %{buildroot}
 
 
 %changelog
+* Tue Jun  6 2017 Matthew Miller <mattdm@fedoraproject.org> - 2.12.6.0-1
+- new upstream development release (minor bugfixes)
+- github release url
+- recommend rather than require `less`
+
 * Mon May 22 2017 Matthew Miller <mattdm@fedoraproject.org> - 2.12.5.6-1
 - new upstream release 2.15.5.6 (2.15.5.5 only lasted a few hours)
 - primarily code cleanup to prepare for move to github
diff --git a/sources b/sources
index d848081..27840da 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (calc-2.12.5.6.tar.bz2) = 6a5cc61fdbcb59106ce4a5ad1965c0ddf902ac02cf34739f491909cbb96b10a15ade8af276ac68dd4ac3811e96b14e0dee490d39b382fde2d8e873e932c90ac4
+SHA512 (calc-2.12.6.0.tar.bz2) = ed448276d5ab4cece40b743108320431527f53214dbca203be0b5b8e5b6be20e0bef3110d5c852df04f8f3c0ca4b7e135f769798f7adb1353d881b80b42ede72