diff --git a/.github/workflows/build-test.yaml b/.github/workflows/build-test.yaml
index 4a3e0ced..99666686 100644
--- a/.github/workflows/build-test.yaml
+++ b/.github/workflows/build-test.yaml
@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
     - uses: actions/checkout@v2
 
diff --git a/scripts/ci-install.sh b/scripts/ci-install.sh
index 031b1009..e26c48c4 100755
--- a/scripts/ci-install.sh
+++ b/scripts/ci-install.sh
@@ -16,7 +16,7 @@ mkdir -p ${BUILD_DIR} ${CACHE_DIR}
 ######################################################################
 
 echo -e "\n\n=============== Install system dependencies\n\n"
-PKGS="virtualenv python-dev libffi-dev build-essential"
+PKGS="virtualenv python2-dev libffi-dev build-essential"
 PKGS="${PKGS} gcc-avr avr-libc"
 PKGS="${PKGS} libnewlib-arm-none-eabi gcc-arm-none-eabi binutils-arm-none-eabi"
 PKGS="${PKGS} pv libmpfr-dev libgmp-dev libmpc-dev texinfo bison flex"
@@ -35,10 +35,10 @@ if [ ! -f ${PRU_FILE} ]; then
     cd ${BUILD_DIR}
     git config --global user.email "you@example.com"
     git config --global user.name "Your Name"
-    git clone https://github.com/dinuxbg/gnupru -b 2018.03-beta-rc3 --depth 1
+    git clone https://github.com/dinuxbg/gnupru -b 2023.01 --depth 1
     cd gnupru
     export PREFIX=${PRU_DIR}
-    ./download-and-patch.sh 2>&1 | pv -nli 30 > ${BUILD_DIR}/gnupru-build.log
+    ./download-and-prepare.sh 2>&1 | pv -nli 30 > ${BUILD_DIR}/gnupru-build.log
     ./build.sh 2>&1 | pv -nli 30 >> ${BUILD_DIR}/gnupru-build.log
     cd ${BUILD_DIR}
     tar cfz ${PRU_FILE} pru-gcc/