diff --git a/configuration.ccl b/configuration.ccl
index 696ef5c..c40301f 100644
--- a/configuration.ccl
+++ b/configuration.ccl
@@ -5,6 +5,7 @@ PROVIDES GSL
   SCRIPT src/detect.sh
   LANG bash
   OPTIONS GSL_DIR GSL_INSTALL_DIR GSL_LIBS
+  VERSION 2.7
 }
 
 # Pass configuration options to build script
diff --git a/dist/gsl-1.16.tar.gz b/dist/gsl-1.16.tar.gz
deleted file mode 100644
index ad68e06..0000000
Binary files a/dist/gsl-1.16.tar.gz and /dev/null differ
diff --git a/dist/gsl-2.7.tar.gz b/dist/gsl-2.7.tar.gz
new file mode 100644
index 0000000..75fb995
Binary files /dev/null and b/dist/gsl-2.7.tar.gz differ
diff --git a/dist/patchtest.patch b/dist/patchtest.patch
deleted file mode 100644
index 837e2c2..0000000
--- a/dist/patchtest.patch
+++ /dev/null
@@ -1,5 +0,0 @@
-diff --new-file -ru a/.patch_tmp b/.patch_tmp
---- a/.patch_tmp	1969-12-31 18:00:00.000000000 -0600
-+++ b/.patch_tmp	2010-06-24 19:43:15.000000000 -0500
-@@ -0,0 +1 @@
-+ 
diff --git a/dist/stdarg.patch b/dist/stdarg.patch
deleted file mode 100644
index 1ef6010..0000000
--- a/dist/stdarg.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff -ru gsl-1.16-orig/test/results.c gsl-1.16/test/results.c
---- gsl-1.16-orig/test/results.c	2013-07-17 13:04:26.000000000 -0700
-+++ gsl-1.16/test/results.c	2015-04-28 13:24:11.901318472 -0700
-@@ -29,7 +29,7 @@
- #ifdef STDC_HEADERS
- #include <stdarg.h>
- #else
--#include <varargs.h>
-+#include <stdarg.h>
- #endif
- #endif
- 
diff --git a/src/build.sh b/src/build.sh
index 26b4dd8..49d2d4e 100755
--- a/src/build.sh
+++ b/src/build.sh
@@ -14,7 +14,7 @@ set -e                          # Abort on errors
 
 # Set locations
 THORN=GSL
-NAME=gsl-1.16
+NAME=gsl-2.7
 SRCDIR="$(dirname $0)"
 BUILD_DIR=${SCRATCH_BUILD}/build/${THORN}
 if [ -z "${GSL_INSTALL_DIR}" ]; then
@@ -43,22 +43,6 @@ mkdir ${BUILD_DIR} ${INSTALL_DIR}
 echo "GSL: Unpacking archive..."
 pushd ${BUILD_DIR}
 ${TAR?} xzf ${SRCDIR}/../dist/${NAME}.tar.gz
-pushd ${NAME}
-${PATCH?} -p1 < ${SRCDIR}/../dist/stdarg.patch
-# Some (ancient but still used) versions of patch don't support the
-# patch format used here but also don't report an error using the exit
-# code. So we use this patch to test for this
-${PATCH?} -p1 < ${SRCDIR}/../dist/patchtest.patch
-if [ ! -e .patch_tmp ]; then
-    echo 'BEGIN ERROR'
-    echo 'The version of patch is too old to understand this patch format.'
-    echo 'Please set the PATCH environment variable to a more recent '
-    echo 'version of the patch command.'
-    echo 'END ERROR'
-    exit 1
-fi
-rm -f .patch_tmp
-popd
 
 echo "GSL: Configuring..."
 cd ${NAME}