diff --git a/tools/toolchain/scripts/checksums.sha256 b/tools/toolchain/scripts/checksums.sha256
index ae4dfbe1a4..8d525dc8a1 100644
--- a/tools/toolchain/scripts/checksums.sha256
+++ b/tools/toolchain/scripts/checksums.sha256
@@ -25,6 +25,7 @@ c332f08648ec2bc7ccce83e45a84776215aa5dfebc64fae2a23f2ac546d41ea4 *libxc-2.0.1.ta
 5542b99042c09b2925f2e3700d769cda4fb411b476d446c833ea28c6bfa8792a *libxc-3.0.0.tar.gz
 85aec0799bb77c0eca13f11b7124601d4b2ba5961dd390a98a3163fc9f1dbae7 *libxc-4.0.3.tar.gz
 f63f0d67eca45ca0cde4c53bc4b340146f5323dcdbf1f679f13b86623be383d0 *libxc-4.0.4.tar.gz
+02e49e9ba7d21d18df17e9e57eae861e6ce05e65e966e1e832475aa09e344256 *libxc-4.2.3.tar.gz
 37c3ba2d3cd3f4ea239497d9d34bd57a663a34e2ea25099c2cbef118c9156587 *mpich-3.1.2.tar.gz
 0778679a6b693d7b7caff37ff9d2856dc2bfc51318bf8373859bfa74253da3dc *mpich-3.2.tar.gz
 5db53bf2edfaa2238eb6a0a5bc3d2c2ccbfbb1badd79b664a1a919d2ce2330f1 *mpich-3.2.1.tar.gz
diff --git a/tools/toolchain/scripts/install_libxc.sh b/tools/toolchain/scripts/install_libxc.sh
index baf32af48a..a329a780d2 100755
--- a/tools/toolchain/scripts/install_libxc.sh
+++ b/tools/toolchain/scripts/install_libxc.sh
@@ -2,7 +2,7 @@
 [ "${BASH_SOURCE[0]}" ] && SCRIPT_NAME="${BASH_SOURCE[0]}" || SCRIPT_NAME=$0
 SCRIPT_DIR="$(cd "$(dirname "$SCRIPT_NAME")" && pwd -P)"
 
-libxc_ver=${libxc_ver:-4.0.3}
+libxc_ver=${libxc_ver:-4.2.3}
 source "${SCRIPT_DIR}"/common_vars.sh
 source "${SCRIPT_DIR}"/tool_kit.sh
 source "${SCRIPT_DIR}"/signal_trap.sh