diff --git a/arch/Linux-x86-64-gfortran-regtest.pdbg b/arch/Linux-x86-64-gfortran-regtest.pdbg
index a33d35c682..751a565ce6 100644
--- a/arch/Linux-x86-64-gfortran-regtest.pdbg
+++ b/arch/Linux-x86-64-gfortran-regtest.pdbg
@@ -1,11 +1,11 @@
-# Tested with: GFortran 7.4.0, MPICH 3.3, LAPACK 3.8.0, ScaLAPACK 2.0.2, FFTW 3.3, Libint 2.5.0, Libxc 4.3.4, ELPA 2017.05.003, PLUMED 2.4.1
+# Tested with: GFortran 7.4.0, MPICH 3.3, LAPACK 3.8.0, ScaLAPACK 2.0.2, FFTW 3.3, Libint 2.5.0, Libxc 4.3.4, ELPA 2017.05.003, PLUMED 2.5.2
 # Author: Matthias Krack (matthias.krack@psi.ch, PSI, July 2019)
 CC         = mpicc
 CPP        =
 FC         = mpif90
 LD         = mpif90
 AR         = ar -r
-include      $(MPI_PATH)/plumed/2.4.1/lib/plumed/src/lib/Plumed.inc.static
+include      $(MPI_PATH)/plumed/2.5.2/lib/plumed/src/lib/Plumed.inc.static
 ELPA_VER   = 2017.05.003
 ELPA_INC   = $(MPI_PATH)/elpa/$(ELPA_VER)/include/elpa-$(ELPA_VER)
 ELPA_LIB   = $(MPI_PATH)/elpa/$(ELPA_VER)/lib
diff --git a/arch/Linux-x86-64-gfortran-regtest.psmp b/arch/Linux-x86-64-gfortran-regtest.psmp
index cdba8f7b22..23b866412f 100644
--- a/arch/Linux-x86-64-gfortran-regtest.psmp
+++ b/arch/Linux-x86-64-gfortran-regtest.psmp
@@ -1,11 +1,11 @@
-# Tested with: GFortran 7.4.0, MPICH 3.3, LAPACK 3.8.0, ScaLAPACK 2.0.2, FFTW 3.3, Libint 2.5.0, Libxc 4.3.4, ELPA 2017.05.003, PLUMED 2.4.1
+# Tested with: GFortran 7.4.0, MPICH 3.3, LAPACK 3.8.0, ScaLAPACK 2.0.2, FFTW 3.3, Libint 2.5.0, Libxc 4.3.4, ELPA 2017.05.003, PLUMED 2.5.2
 # Author: Matthias Krack (matthias.krack@psi.ch, PSI, July 2019)
 CC         = mpicc
 CPP        =
 FC         = mpif90
 LD         = mpif90
 AR         = ar -r
-include      $(MPI_PATH)/plumed/2.4.1/lib/plumed/src/lib/Plumed.inc.static
+include      $(MPI_PATH)/plumed/2.5.2/lib/plumed/src/lib/Plumed.inc.static
 ELPA_VER   = 2017.05.003
 ELPA_INC   = $(MPI_PATH)/elpa/$(ELPA_VER)-openmp/include/elpa_openmp-$(ELPA_VER)
 ELPA_LIB   = $(MPI_PATH)/elpa/$(ELPA_VER)-openmp/lib