diff --git a/INSTALL.rst b/INSTALL.rst
index c91b184f..825c0c4d 100644
--- a/INSTALL.rst
+++ b/INSTALL.rst
@@ -143,7 +143,7 @@ IRPF90
 to Parameters (IRP) method. 
 
 * Download the latest version of IRPF90
-  here : `<https://github.com/scemama/irpf90/releases/latest>`_ and move
+  here : `<https://gitlab.com/scemama/irpf90/-/archive/v1.7.2/irpf90-v1.7.2.tar.gz>`_ and move
   the downloaded archive in the :file:`${QP_ROOT}/external` directory
 
 * Extract the archive and go into the :file:`irpf90-*` directory to run
diff --git a/configure b/configure
index c343c243..c3ff8942 100755
--- a/configure
+++ b/configure
@@ -297,12 +297,13 @@ EOF
 ${QP_ROOT}/bin
 
 
+
 EOF
 
                 rm ${QP_ROOT}/external/opam_installer.sh
                 source ${OPAMROOT}/opam-init/init.sh > /dev/null 2> /dev/null || true
 
-                ${QP_ROOT}/bin/opam init --verbose --yes 
+                ${QP_ROOT}/bin/opam init --verbose --yes --comp=4.07.1 --disable-sandboxing
 
                 eval $(${QP_ROOT}/bin/opam env)
                 opam install -y ${OCAML_PACKAGES}  || exit 1
@@ -310,13 +311,14 @@ EOF
                 # Conventional commands
                 execute << EOF
                   chmod +x "\${QP_ROOT}"/external/opam_installer.sh
+                  "\${QP_ROOT}"/external/opam_installer.sh --no-backup 
                   rm --force \${QP_ROOT}/bin/opam
                   export OPAMROOT=\${OPAMROOT:-\${QP_ROOT}/external/opam}
                   echo \${QP_ROOT}/bin \
                   | sh \${QP_ROOT}/external/opam_installer.sh 
                   rm \${QP_ROOT}/external/opam_installer.sh
                   source \${OPAMROOT}/opam-init/init.sh > /dev/null 2> /dev/null || true
-                  \${QP_ROOT}/bin/opam init --verbose --yes
+                  \${QP_ROOT}/bin/opam init --verbose --yes --comp=4.07.1 --disable-sandboxing
                   eval \$(\${QP_ROOT}/bin/opam env)
                   opam install -y \${OCAML_PACKAGES}  || exit 1
 EOF