diff --git a/tools/toolchain/scripts/checksums.sha256 b/tools/toolchain/scripts/checksums.sha256
index bf347efa64..8ce6de210a 100644
--- a/tools/toolchain/scripts/checksums.sha256
+++ b/tools/toolchain/scripts/checksums.sha256
@@ -31,6 +31,7 @@ c332f08648ec2bc7ccce83e45a84776215aa5dfebc64fae2a23f2ac546d41ea4 *libxc-2.0.1.ta
 f63f0d67eca45ca0cde4c53bc4b340146f5323dcdbf1f679f13b86623be383d0 *libxc-4.0.4.tar.gz
 02e49e9ba7d21d18df17e9e57eae861e6ce05e65e966e1e832475aa09e344256 *libxc-4.2.3.tar.gz
 bc9bfe4aabb228a74d0d1e50c9a6e804f1121540af4fd63f683afa55e99cc9d4 *libxc-4.3.0.tar.gz
+a8ee37ddc5079339854bd313272856c9d41a27802472ee9ae44b58ee9a298337 *libxc-4.3.4.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 24a391aa16..4288ebcc1f 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=${libxc_ver:-4.3.0}
+libxc_ver=${libxc_ver:-4.3.4}
 source "${SCRIPT_DIR}"/common_vars.sh
 source "${SCRIPT_DIR}"/tool_kit.sh
 source "${SCRIPT_DIR}"/signal_trap.sh
@@ -28,21 +28,12 @@ case "$with_libxc" in
                 echo "libxc-${libxc_ver}.tar.gz is found"
             else
                 download_pkg ${DOWNLOADER_FLAGS} \
-                             https://tddft.org/programs/octopus/download/libxc/${libxc_ver}/libxc-${libxc_ver}.tar.gz
+                             https://www.cp2k.org/static/downloads/libxc-${libxc_ver}.tar.gz
             fi
             echo "Installing from scratch into ${pkg_install_dir}"
             [ -d libxc-${libxc_ver} ] && rm -rf libxc-${libxc_ver}
             tar -xzf libxc-${libxc_ver}.tar.gz
             cd libxc-${libxc_ver}
-            # patch buggy configure macro (fails with gcc trunk)
-            sed -i 's/ax_cv_f90_modext=$(ls | sed/ax_cv_f90_modext=)ls -1 | grep -iv smod | sed/g' \
-                configure
-            # patch for libxc 3.0.0 + gcc 6.4.0 (undefined behavior in lda_x.c)
-            CFLAGS=`echo ${CFLAGS} |sed 's|-fno-omit-frame-pointer ||g'`
-
-            # patch for libxc 4.3.0 (undefined symbols due to function removal)
-            patch -p1 < "${SCRIPT_DIR}/files/libxc-4.3.0-fix-fortran-iface.patch"
-
             ./configure  --prefix="${pkg_install_dir}" --libdir="${pkg_install_dir}/lib" > configure.log 2>&1
             make -j $NPROCS > make.log 2>&1
             make install > install.log 2>&1