diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3b5b399..2e12e57 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -133,7 +133,7 @@ set(CPACK_RPM_PACKAGE_URL "https://github.com/UtrechtUniversity/irods-uu-microse
 set(CPACK_RPM_PACKAGE_AUTOREQ 0)
 set(CPACK_RPM_PACKAGE_AUTOPROV 0)
 
-set(CPACK_DEBIAN_PACKAGE_DEPENDS "irods-server = ${IRODS_VERSION}, irods-runtime = ${IRODS_VERSION}")
+set(CPACK_DEBIAN_PACKAGE_DEPENDS "irods-server ( = ${IRODS_VERSION}-1~bionic ), irods-runtime ( = ${IRODS_VERSION}-1~bionic )")
 set(CPACK_DEBIAN_PACKAGE_HOMEPAGE "https://github.com/UtrechtUniversity/irods-uu-microservices")
 set(CPACK_DEBIAN_PACKAGE_SECTION "contrib/science")
 
diff --git a/vagrant/build/.env b/vagrant/build/.env
index 3566805..6f12b3c 100644
--- a/vagrant/build/.env
+++ b/vagrant/build/.env
@@ -2,8 +2,8 @@
 
 # Tested/supported box names:
 # - generic/centos7
-# - ubuntu/bionic64
 BOXNAME=generic/centos7
+# - ubuntu/focal64
 
 # Amount of memory for VM (MB)
 MEMORY=2048
@@ -19,14 +19,14 @@ APT_IRODS_REPO_SIGNING_KEY_LOC=https://packages.irods.org/irods-signing-key.asc
 # since packages for Ubuntu 18.04 aren't available yet.
 APT_IRODS_REPO_URL=https://packages.irods.org/apt/
 APT_IRODS_REPO_ARCHITECTURE=amd64
-APT_IRODS_REPO_DISTRIBUTION=xenial
+APT_IRODS_REPO_DISTRIBUTION=bionic
 APT_IRODS_REPO_COMPONENT=main
 
 # Packages to be installed (separated by whitespace).
 # Dependencies do not have to be listed. They are resolved by the script
-APT_GEN_PACKAGES="cmake make gcc rpm libssl-dev libboost-dev libboost-locale libjansson-dev libuuid1"
+APT_GEN_PACKAGES="cmake make gcc rpm libssl-dev libboost-dev libboost-locale-dev libjansson-dev libuuid1 libstdc++-10-dev libcurl4-openssl-dev uuid-dev libarchive-dev"
 APT_IRODS_PACKAGES="irods-runtime irods-dev"
-APT_IRODS_EXTERNAL_PACKAGES="irods-externals-cmake3.5.2-0 irods-externals-clang6.0-0"
+APT_IRODS_EXTERNAL_PACKAGES="irods-externals-cmake3.11.4-0 irods-externals-clang6.0-0"
 
 # Parameters of Yum repository
 YUM_IRODS_REPO_SIGNING_KEY_LOC=https://packages.irods.org/irods-signing-key.asc
diff --git a/vagrant/build/install-microservices-build-env.sh b/vagrant/build/install-microservices-build-env.sh
index 6f92a39..39ba8a2 100644
--- a/vagrant/build/install-microservices-build-env.sh
+++ b/vagrant/build/install-microservices-build-env.sh
@@ -47,9 +47,6 @@ then
 
   echo "Installing iRODS UU microservices build environment on Ubuntu."
 
-  echo "Installing dependencies ..."
-  sudo apt-get -y install aptitude
-
   echo "Downloading and installing iRODS repository signing key ..."
   wget -qO - "$APT_IRODS_REPO_SIGNING_KEY_LOC" | sudo apt-key add -
 
@@ -57,11 +54,36 @@ then
 cat << ENDAPTREPO | sudo tee /etc/apt/sources.list.d/irods.list
 deb [arch=${APT_IRODS_REPO_ARCHITECTURE}] $APT_IRODS_REPO_URL $APT_IRODS_REPO_DISTRIBUTION $APT_IRODS_REPO_COMPONENT
 ENDAPTREPO
-  sudo apt-get update
+  sudo apt update
+
+  echo "Installing dependencies ..."
+  sudo apt-get -y install aptitude libboost-locale-dev
+
+  sudo apt install -y libpython2-stdlib libpython2.7-minimal libpython2.7-stdlib \
+          python-is-python2 python-six python2 python2-minimal python2.7 python2.7-minimal \
+          python-certifi python-chardet python-idna python-pkg-resources python-setuptools
+
+  PY_URLLIB_PREFIX="http://security.ubuntu.com/ubuntu/pool/main/p/python-urllib3"
+  PY_URLLIB_FILENAME="python-urllib3_1.22-1ubuntu0.18.04.2_all.deb"
+  PY_REQUESTS_PREFIX="http://security.ubuntu.com/ubuntu/pool/main/r/requests"
+  PY_REQUESTS_FILENAME="python-requests_2.18.4-2ubuntu0.1_all.deb"
+  OPENSSL_PREFIX="http://security.ubuntu.com/ubuntu/pool/main/o/openssl1.0"
+  OPENSSL_FILENAME="libssl1.0.0_1.0.2n-1ubuntu5.13_amd64.deb"
+
+  wget \
+        ${PY_URLLIB_PREFIX}/${PY_URLLIB_FILENAME} \
+        ${PY_REQUESTS_PREFIX}/${PY_REQUESTS_FILENAME} \
+        ${OPENSSL_PREFIX}/${OPENSSL_FILENAME}
+
+  for package in $PY_URLLIB_FILENAME $PY_REQUESTS_FILENAME $OPENSSL_FILENAME
+  do echo "Installing package ${package%.*}"
+     sudo dpkg -i "$package"
+     rm "$package"
+  done
 
   for package in $APT_IRODS_PACKAGES
   do echo "Installing package $package and its dependencies"
-     sudo apt-get -y install "$package=${IRODS_VERSION}"
+     sudo apt-get -y install "$package=${IRODS_VERSION}-1~bionic"
      sudo aptitude hold "$package"
   done