diff --git a/arch/JURECA-cpu.psmp b/arch/JURECA-cpu.psmp
index 9a5c1e4647..2cc0d02e4b 100644
--- a/arch/JURECA-cpu.psmp
+++ b/arch/JURECA-cpu.psmp
@@ -3,7 +3,7 @@
 # CP2K arch file for JURECA at FZ Juelich (2 AMD EPYC 7742 CPUs per node)
 #
 # Tested with: GNU 11.3.0, ParaStationMPI, 
-#              ScaLAPACK 2.2.1, OpenBLAS 0.3.27,
+#              ScaLAPACK 2.2.1, OpenBLAS 0.3.28,
 #              FFTW 3.3.10, COSMA 2.6.6,
 #              ELPA 2024.03.001, HDF5 1.14.2,
 #              LIBINT 2.6.0, LIBPEXSI 1.2.0,
@@ -15,7 +15,7 @@
 #        A full toolchain installation is performed as default.
 #        Replace or adapt the "module add" commands below if needed.
 #
-# Last update: 12.06.2024
+# Last update: 12.08.2024
 #
 # \
    if [ "${0}" = "${BASH_SOURCE}" ]; then \
@@ -65,7 +65,7 @@ USE_LIBTORCH   := 1.12.1
 USE_LIBVORI    := 220621
 USE_LIBXC      := 6.2.2
 USE_LIBXSMM    := 1.17
-USE_OPENBLAS   := 0.3.27
+USE_OPENBLAS   := 0.3.28
 USE_PLUMED     := 2.9.0
 USE_QUIP       := 0.9.10
 USE_SCALAPACK  := 2.2.1
diff --git a/arch/JURECA-gpu.psmp b/arch/JURECA-gpu.psmp
index 1bbb3c6510..ec526936a1 100644
--- a/arch/JURECA-gpu.psmp
+++ b/arch/JURECA-gpu.psmp
@@ -3,7 +3,7 @@
 # CP2K arch file for JURECA at FZ Juelich (2 AMD EPYC 7742 CPUs and 4 A100 GPUs per node)
 #
 # Tested with: GNU 11.3.0, ParaStationMPI, 
-#              ScaLAPACK 2.2.1, OpenBLAS 0.3.27,
+#              ScaLAPACK 2.2.1, OpenBLAS 0.3.28,
 #              FFTW 3.3.10, COSMA 2.6.6,
 #              ELPA 2024.03.001, HDF5 1.14.2,
 #              LIBINT 2.6.0, LIBPEXSI 1.2.0,
@@ -15,7 +15,7 @@
 #        A full toolchain installation is performed as default.
 #        Replace or adapt the "module add" commands below if needed.
 #
-# Last update: 12.06.2024
+# Last update: 12.08.2024
 #
 # \
    if [ "${0}" = "${BASH_SOURCE}" ]; then \
@@ -66,7 +66,7 @@ USE_LIBTORCH   := 1.12.1
 USE_LIBVORI    := 220621
 USE_LIBXC      := 6.2.2
 USE_LIBXSMM    := 1.17
-USE_OPENBLAS   := 0.3.27
+USE_OPENBLAS   := 0.3.28
 USE_PLUMED     := 2.9.0
 USE_QUIP       := 0.9.10
 USE_SCALAPACK  := 2.2.1
diff --git a/arch/Linux-gnu-aarch64-static.ssmp b/arch/Linux-gnu-aarch64-static.ssmp
index dccbd6bcac..4cf1670dfd 100644
--- a/arch/Linux-gnu-aarch64-static.ssmp
+++ b/arch/Linux-gnu-aarch64-static.ssmp
@@ -3,12 +3,12 @@
 # CP2K (GNU aarch64) arch file for a serial static ARM64 binary
 #
 # Tested with: GNU 14.1.0, FFTW 3.3.10, LIBINT 2.6.0, LIBVORI 220621,
-#              LIBXC 6.2.2, OpenBLAS 0.3.27, SPGLIB 2.3.1, DFTD4 3.6.0,
+#              LIBXC 6.2.2, OpenBLAS 0.3.28, SPGLIB 2.3.1, DFTD4 3.6.0,
 #              LIBGRPP 20231225
 #
 # Usage: Source this arch file and then run make as instructed.
 #
-# Last update: 04.08.2024
+# Last update: 12.08.2024
 #
 # \
    if [[ "${0}" == "${BASH_SOURCE}" ]]; then \
@@ -42,7 +42,7 @@ USE_LIBGRPP    := 20231225
 USE_LIBINT     := 2.6.0
 USE_LIBVORI    := 220621
 USE_LIBXC      := 6.2.2
-USE_OPENBLAS   := 0.3.27
+USE_OPENBLAS   := 0.3.28
 USE_SPGLIB     := 2.3.1
 
 LMAX           := 5
diff --git a/arch/Linux-gnu-aarch64.psmp b/arch/Linux-gnu-aarch64.psmp
index bba02d5e62..0b803af127 100644
--- a/arch/Linux-gnu-aarch64.psmp
+++ b/arch/Linux-gnu-aarch64.psmp
@@ -3,7 +3,7 @@
 # CP2K (GNU aarch64) arch file for Linux clusters
 #
 # Tested with: GNU 14.1.0, MPICH 4.0.3, 
-#              ScaLAPACK 2.2.1, OpenBLAS 0.3.27,
+#              ScaLAPACK 2.2.1, OpenBLAS 0.3.28,
 #              FFTW 3.3.10, HDF5 1.14.2,
 #              LIBINT 2.6.0, LIBXC 6.2.2,
 #              ELPA 2024.03.001, PLUMED 2.9.0,
@@ -15,7 +15,7 @@
 # Usage: Source this arch file and then run make as instructed.
 #        A full toolchain installation is performed as default.
 #
-# Last update: 04.08.2024
+# Last update: 12.08.2024
 #
 # \
    if [[ "${0}" == "${BASH_SOURCE}" ]]; then \
@@ -65,7 +65,7 @@ USE_LIBPEXSI   := 1.2.0
 USE_LIBVORI    := 220621
 USE_LIBXC      := 6.2.2
 #USE_LIBXSMM    := 1.17
-USE_OPENBLAS   := 0.3.27
+USE_OPENBLAS   := 0.3.28
 USE_PLUMED     := 2.9.0
 USE_QUIP       := 0.9.10
 USE_SCALAPACK  := 2.2.1
diff --git a/arch/Linux-gnu-x86_64-static.ssmp b/arch/Linux-gnu-x86_64-static.ssmp
index 1b8845ba1e..ceff55e756 100644
--- a/arch/Linux-gnu-x86_64-static.ssmp
+++ b/arch/Linux-gnu-x86_64-static.ssmp
@@ -3,12 +3,12 @@
 # CP2K (GNU) arch file for a serial static x86_64 binary
 #
 # Tested with: GNU 14.1.0, FFTW 3.3.10, LIBINT 2.6.0, LIBVORI 220621,
-#              LIBXC 6.2.2, OpenBLAS 0.3.27, SPGLIB 2.3.1, LIBVORI 220621,
+#              LIBXC 6.2.2, OpenBLAS 0.3.28, SPGLIB 2.3.1, LIBVORI 220621,
 #              LIBGRPP 20231225, DFTD4 3.6.0
 #
 # Usage: Source this arch file and then run make as instructed.
 #
-# Last update: 04.08.2024
+# Last update: 12.08.2024
 #
 # \
    if [[ "${0}" == "${BASH_SOURCE}" ]]; then \
@@ -43,7 +43,7 @@ USE_LIBGRPP    := 20231225
 USE_LIBINT     := 2.6.0
 USE_LIBVORI    := 220621
 USE_LIBXC      := 6.2.2
-USE_OPENBLAS   := 0.3.27
+USE_OPENBLAS   := 0.3.28
 USE_SPGLIB     := 2.3.1
 
 LMAX           := 5
diff --git a/arch/Linux-gnu-x86_64.psmp b/arch/Linux-gnu-x86_64.psmp
index 48397dc848..333d4a11f1 100644
--- a/arch/Linux-gnu-x86_64.psmp
+++ b/arch/Linux-gnu-x86_64.psmp
@@ -3,7 +3,7 @@
 # CP2K (GNU x86_64) arch file for Linux clusters
 #
 # Tested with: GNU 14.1.0, MPICH 4.0.3 and OpenMPI 5.0.5,
-#              ScaLAPACK 2.2.1, OpenBLAS 0.3.27,
+#              ScaLAPACK 2.2.1, OpenBLAS 0.3.28,
 #              FFTW 3.3.10, ELPA 2024.03.001, HDF5 1.14.2,
 #              LIBINT 2.6.0, LIBXC 6.2.2, PLUMED 2.9.0,
 #              SPGLIB 2.3.1, LIBVORI 220621, GSL 2.7,
@@ -17,7 +17,7 @@
 #        Optionally, GNU compiler and MPI implementation can be specified as arguments.
 #        Replace or adapt the "module add" commands below if needed.
 #
-# Last update: 04.08.2024
+# Last update: 12.08.2024
 #
 # \
    if [[ "${0}" == "${BASH_SOURCE}" ]]; then \
@@ -82,7 +82,7 @@ USE_LIBTORCH   := 1.12.1
 USE_LIBVORI    := 220621
 USE_LIBXC      := 6.2.2
 USE_LIBXSMM    := 1.17
-USE_OPENBLAS   := 0.3.27
+USE_OPENBLAS   := 0.3.28
 USE_PLUMED     := 2.9.0
 USE_QUIP       := 0.9.10
 USE_SCALAPACK  := 2.2.1
diff --git a/tools/toolchain/scripts/get_openblas_arch.sh b/tools/toolchain/scripts/get_openblas_arch.sh
index ec8ee92f81..11cda226b8 100755
--- a/tools/toolchain/scripts/get_openblas_arch.sh
+++ b/tools/toolchain/scripts/get_openblas_arch.sh
@@ -6,8 +6,8 @@
 [ "${BASH_SOURCE[0]}" ] && SCRIPT_NAME="${BASH_SOURCE[0]}" || SCRIPT_NAME=$0
 SCRIPT_DIR="$(cd "$(dirname "$SCRIPT_NAME")" && pwd -P)"
 
-openblas_ver="0.3.27" # Keep in sync with install_openblas.sh
-openblas_sha256="aa2d68b1564fe2b13bc292672608e9cdeeeb6dc34995512e65c3b10f4599e897"
+openblas_ver="0.3.28" # Keep in sync with install_openblas.sh
+openblas_sha256="f1003466ad074e9b0c8d421a204121100b0751c96fc6fcf3d1456bd12f8a00a1"
 openblas_pkg="OpenBLAS-${openblas_ver}.tar.gz"
 
 source "${SCRIPT_DIR}"/common_vars.sh
diff --git a/tools/toolchain/scripts/stage2/install_openblas.sh b/tools/toolchain/scripts/stage2/install_openblas.sh
index 83d27468ab..e0be7fc1e9 100755
--- a/tools/toolchain/scripts/stage2/install_openblas.sh
+++ b/tools/toolchain/scripts/stage2/install_openblas.sh
@@ -6,8 +6,8 @@
 [ "${BASH_SOURCE[0]}" ] && SCRIPT_NAME="${BASH_SOURCE[0]}" || SCRIPT_NAME=$0
 SCRIPT_DIR="$(cd "$(dirname "$SCRIPT_NAME")/.." && pwd -P)"
 
-openblas_ver="0.3.27" # Keep in sync with get_openblas_arch.sh
-openblas_sha256="aa2d68b1564fe2b13bc292672608e9cdeeeb6dc34995512e65c3b10f4599e897"
+openblas_ver="0.3.28" # Keep in sync with get_openblas_arch.sh
+openblas_sha256="f1003466ad074e9b0c8d421a204121100b0751c96fc6fcf3d1456bd12f8a00a1"
 openblas_pkg="OpenBLAS-${openblas_ver}.tar.gz"
 
 source "${SCRIPT_DIR}"/common_vars.sh