diff --git a/.github/workflows/postgresql-11-build.yml b/.github/workflows/postgresql-11-build.yml
deleted file mode 100644
index 8482dc3b..00000000
--- a/.github/workflows/postgresql-11-build.yml
+++ /dev/null
@@ -1,127 +0,0 @@
-name: postgresql-11-build
-on:
-  pull_request:
-  push:
-    branches:
-      - main
-    tags:
-      - '[0-9]+.[0-9]+.[0-9]+*'
-
-jobs:
-  build:
-    name: pg-11-build-test
-    runs-on: ubuntu-22.04
-    steps:
-      - name: Clone postgres repository
-        uses: actions/checkout@v4
-        with:
-          repository: 'postgres/postgres'
-          ref: 'REL_11_STABLE'
-
-      - name: Install dependencies
-        run: |
-          sudo apt-get update
-          sudo apt purge postgresql-client-common postgresql-common \
-            postgresql postgresql*
-          sudo apt-get install -y libreadline6-dev systemtap-sdt-dev \
-            zlib1g-dev libssl-dev libpam0g-dev bison flex \
-            libipc-run-perl -y docbook-xsl docbook-xsl libxml2 libxml2-utils \
-            libxml2-dev libxslt-dev xsltproc libkrb5-dev libldap2-dev \
-            libsystemd-dev gettext tcl-dev libperl-dev pkg-config clang-11 \
-            llvm-11 llvm-11-dev libselinux1-dev python3-dev uuid-dev liblz4-dev
-          sudo rm -rf /var/lib/postgresql /var/log/postgresql /etc/postgresql \
-            /usr/lib/postgresql /usr/include/postgresql /usr/share/postgresql \
-            /etc/postgresql
-          sudo rm -f /usr/bin/pg_config
-
-      - name: Create pgsql dir
-        run: mkdir -p /opt/pgsql
-
-      - name: Build postgres
-        run: |
-          export PATH="/opt/pgsql/bin:$PATH"
-          ./configure '--build=x86_64-linux-gnu' '--prefix=/usr' \
-            '--includedir=/usr/include' '--mandir=/usr/share/man' \
-            '--infodir=/usr/share/info' '--sysconfdir=/etc' '--enable-nls' \
-            '--localstatedir=/var' '--libdir=/usr/lib/x86_64-linux-gnu' \
-            'runstatedir=/run' '--with-icu' '--with-tcl' '--with-perl' \
-            '--with-python' '--with-pam' '--with-openssl' '--with-libxml' \
-            '--with-libxslt' 'PYTHON=/usr/bin/python3' 'MKDIR_P=/bin/mkdir -p' \
-            '--mandir=/usr/share/postgresql/11/man' '--enable-dtrace' \
-            '--docdir=/usr/share/doc/postgresql-doc-11' '--enable-debug' \
-            '--sysconfdir=/etc/postgresql-common' '--datarootdir=/usr/share' \
-            '--datadir=/usr/share/postgresql/11' '--enable-thread-safety' \
-            '--bindir=/usr/lib/postgresql/11/bin' '--enable-tap-tests' \
-            '--libdir=/usr/lib/x86_64-linux-gnu' '--disable-rpath' \
-            '--libexecdir=/usr/lib/postgresql' '--with-uuid=e2fs' \
-            '--includedir=/usr/include/postgresql' '--with-gnu-ld' \
-            '--with-pgport=5432' '--with-system-tzdata=/usr/share/zoneinfo' \
-            '--with-llvm' 'LLVM_CONFIG=/usr/bin/llvm-config-11' \
-            'CLANG=/usr/bin/clang-11' '--with-systemd' '--with-selinux' \
-            'PROVE=/usr/bin/prove' 'TAR=/bin/tar' '--with-gssapi' '--with-ldap' \
-            'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now' \
-            '--with-includes=/usr/include/mit-krb5' '--with-libs=/usr/lib/mit-krb5' \
-            '--with-libs=/usr/lib/x86_64-linux-gnu/mit-krb5' \
-            'build_alias=x86_64-linux-gnu' \
-            'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2' \
-            'CFLAGS=-g -O2 -fstack-protector-strong -Wformat -Werror=format-security -fno-omit-frame-pointer' \
-            'CXXFLAGS=-g -O2 -fstack-protector-strong -Wformat -Werror=format-security'
-           make world
-           sudo make install-world
-
-      - name: Start postgresql cluster
-        run: |
-          export PATH="/usr/lib/postgresql/11/bin:$PATH"
-          sudo cp /usr/lib/postgresql/11/bin/pg_config /usr/bin
-          initdb -D /opt/pgsql/data
-          pg_ctl -D /opt/pgsql/data -l logfile start
-
-      - name: Clone pg_stat_monitor repository
-        uses: actions/checkout@v4
-        with:
-          path: 'src/pg_stat_monitor'
-
-      - name: Build pg_stat_monitor
-        run: |
-          make USE_PGXS=1
-          sudo make USE_PGXS=1 install
-        working-directory: src/pg_stat_monitor/
-
-      - name: Load pg_stat_monitor library and Restart Server
-        run: |
-          export PATH="/usr/lib/postgresql/11/bin:$PATH"
-          pg_ctl -D /opt/pgsql/data -l logfile stop
-          echo "shared_preload_libraries = 'pg_stat_monitor'" >> \
-            /opt/pgsql/data/postgresql.conf
-          pg_ctl -D /opt/pgsql/data -l logfile start
-        working-directory: src/pg_stat_monitor
-
-      - name: Start pg_stat_monitor_tests
-        run: |
-          make installcheck
-        working-directory: src/pg_stat_monitor
-
-      - name: Report on pg_stat_monitor test fail
-        uses: actions/upload-artifact@v4
-        if: ${{ failure() }}
-        with:
-          name: Regressions diff and postgresql log
-          path: |
-            src/pg_stat_monitor/regression.diffs
-            src/pg_stat_monitor/logfile
-          retention-days: 1
-
-      - name: Start Server installcheck-world tests
-        run: |
-          make installcheck-world
-
-      - name: Report on installcheck-world test suites fail
-        uses: actions/upload-artifact@v4
-        if: ${{ failure() }}
-        with:
-          name: Regressions output files of failed testsuite, and pg log
-          path: |
-            **/regression.diffs
-            **/regression.out
-            src/pg_stat_monitor/logfile
-          retention-days: 3
diff --git a/.github/workflows/postgresql-11-pgdg-package.yml b/.github/workflows/postgresql-11-pgdg-package.yml
deleted file mode 100644
index 3c2cd73a..00000000
--- a/.github/workflows/postgresql-11-pgdg-package.yml
+++ /dev/null
@@ -1,70 +0,0 @@
-name: postgresql-11-pgdg-package
-on:
-  pull_request:
-  push:
-    branches:
-      - main
-    tags:
-      - '[0-9]+.[0-9]+.[0-9]+*'
-
-jobs:
-  build:
-    name: pg-11-pgdg-package-test
-    runs-on: ubuntu-22.04
-    steps:
-      - name: Clone pg_stat_monitor repository
-        uses: actions/checkout@v4
-        with:
-          path: 'src/pg_stat_monitor'
-
-      - name: Delete old postgresql files
-        run: |
-          sudo apt-get update
-          sudo apt purge postgresql-client-common postgresql-common \
-            postgresql postgresql*
-          sudo rm -rf /var/lib/postgresql /var/log/postgresql /etc/postgresql \
-            /usr/lib/postgresql /usr/include/postgresql /usr/share/postgresql \
-            /etc/postgresql
-          sudo rm -f /usr/bin/pg_config
-
-      - name: Install PG Distribution Postgresql 11
-        run: |
-          sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt \
-            $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
-          sudo wget --quiet -O - \
-            https://www.postgresql.org/media/keys/ACCC4CF8.asc |
-            sudo apt-key add -
-          sudo apt-get -y update
-          sudo apt-get -y install postgresql-11 postgresql-server-dev-11
-
-      - name: Change src owner to postgres
-        run: |
-          sudo chmod o+rx ~
-          sudo chown -R postgres:postgres src
-
-      - name: Build pg_stat_monitor
-        run: |
-          sudo -u postgres bash -c 'make USE_PGXS=1'
-          sudo make USE_PGXS=1 install
-        working-directory: src/pg_stat_monitor
-
-      - name: Start pg_stat_monitor_tests
-        run: |
-          sudo service postgresql stop
-          echo "shared_preload_libraries = 'pg_stat_monitor'" |
-            sudo tee -a /etc/postgresql/11/main/postgresql.conf
-          sudo service postgresql start
-          sudo psql -V
-          export PG_TEST_PORT_DIR=/home/postgres
-          sudo -u postgres bash -c 'make installcheck USE_PGXS=1'
-        working-directory: src/pg_stat_monitor
-
-      - name: Report on test fail
-        uses: actions/upload-artifact@v4
-        if: ${{ failure() }}
-        with:
-          name: Regressions diff and postgresql log
-          path: |
-            src/pg_stat_monitor/regression.diffs
-            src/pg_stat_monitor/logfile
-          retention-days: 3
diff --git a/.github/workflows/postgresql-11-pmm.yaml b/.github/workflows/postgresql-11-pmm.yaml
deleted file mode 100644
index a89708ab..00000000
--- a/.github/workflows/postgresql-11-pmm.yaml
+++ /dev/null
@@ -1,47 +0,0 @@
-name: postgresql-11-pmm-integration
-on:
-  pull_request:
-  push:
-    branches:
-      - main
-    tags:
-      - '[0-9]+.[0-9]+.[0-9]+*'
-
-jobs:
-  build:
-    name: pg-11-pgsm-pmm-integration-test
-    runs-on: ubuntu-latest
-    timeout-minutes: 30
-    steps:
-      - name: Clone QA Integration repository
-        uses: actions/checkout@v4
-        with:
-          repository: 'Percona-Lab/qa-integration'
-          ref: 'main'
-
-      # print branch and Repo name
-      - name: Get branch and Repo Name
-        run: echo 'The branch and Repo Name is' ${{ github.head_ref }} ${{ github.actor }}/pg_stat_monitor
-
-      - name: "Set TARGET_BRANCH variable for a PR run"
-        if: github.event_name == 'pull_request'
-        run: echo "TARGET_BRANCH=${{ github.event.pull_request.base.ref }}" >> $GITHUB_ENV
-
-      - name: "Set TARGET_BRANCH variable for a PUSH run"
-        if: github.event_name == 'push'
-        run: echo "TARGET_BRANCH=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
-      
-      - name: Run PMM & PGSM Setup, E2E Tests
-        run: bash -xe ./pmm_pgsm_setup/pmm_pgsm_setup.sh --pgsql-version=11 --pgstat-monitor-branch=${{ env.TARGET_BRANCH }}
-
-      - name: Get PMM-Agent Logs from the Container
-        if: success() || failure()    # run this step even if previous step failed
-        run: docker exec pgsql_pgsm_11 cat pmm-agent.log > ./pmm-ui-tests/tests/output/pmm-agent.log
-
-      - name: Upload Tests Artifacts
-        uses: actions/upload-artifact@v4
-        if: success() || failure()    # run this step even if previous step failed
-        with:
-          name: tests-artifact
-          path: ./pmm-ui-tests/tests/output/
-          if-no-files-found: ignore # 'warn' or 'ignore' are also available, defaults to `warn`
diff --git a/.github/workflows/postgresql-11-ppg-package.yml b/.github/workflows/postgresql-11-ppg-package.yml
deleted file mode 100644
index 9a769fb8..00000000
--- a/.github/workflows/postgresql-11-ppg-package.yml
+++ /dev/null
@@ -1,79 +0,0 @@
-name: postgresql-11-ppg-package
-on:
-  pull_request:
-  push:
-    branches:
-      - main
-    tags:
-      - '[0-9]+.[0-9]+.[0-9]+*'
-
-jobs:
-  build:
-    name: pg-11-ppg-package-test
-    runs-on: ubuntu-22.04
-    steps:
-      - name: Clone pg_stat_monitor repository
-        uses: actions/checkout@v4
-        with:
-          path: 'src/pg_stat_monitor'
-
-      - name: Install dependencies
-        run: |
-          sudo apt-get update
-          sudo apt purge postgresql-client-common postgresql-common \
-            postgresql postgresql*
-          sudo apt-get install -y libreadline6-dev systemtap-sdt-dev \
-            zlib1g-dev libssl-dev libpam0g-dev python3-dev bison flex \
-            libipc-run-perl wget
-          sudo rm -rf /var/lib/postgresql /var/log/postgresql /etc/postgresql \
-            /usr/lib/postgresql /usr/include/postgresql /usr/share/postgresql \
-            /etc/postgresql
-          sudo rm -f /usr/bin/pg_config
-
-      - name: Install percona-release script
-        run: |
-          sudo apt-get -y update
-          sudo apt-get -y upgrade
-          sudo apt-get install -y wget gnupg2 curl lsb-release
-          sudo wget \
-            https://repo.percona.com/apt/percona-release_latest.generic_all.deb
-          sudo dpkg -i percona-release_latest.generic_all.deb
-
-      - name: Install Percona Distribution Postgresql 11
-        run: |
-          sudo percona-release setup ppg-11
-          sudo apt-get update -y
-          sudo apt-get install -y percona-postgresql-11 \
-            percona-postgresql-contrib percona-postgresql-server-dev-all
-
-      - name: Change src owner to postgres
-        run: |
-          sudo chmod o+rx ~
-          sudo chown -R postgres:postgres src
-
-      - name: Build pg_stat_monitor
-        run: |
-          sudo -u postgres bash -c 'make USE_PGXS=1'
-          sudo make USE_PGXS=1 install
-        working-directory: src/pg_stat_monitor
-
-      - name: Start pg_stat_monitor_tests
-        run: |
-          sudo service postgresql stop
-          echo "shared_preload_libraries = 'pg_stat_monitor'" | 
-            sudo tee -a /etc/postgresql/11/main/postgresql.conf
-          sudo service postgresql start
-          sudo psql -V
-          export PG_TEST_PORT_DIR=/home/postgres
-          sudo -u postgres bash -c 'make installcheck USE_PGXS=1'
-        working-directory: src/pg_stat_monitor
-
-      - name: Report on test fail
-        uses: actions/upload-artifact@v4
-        if: ${{ failure() }}
-        with:
-          name: Regressions diff and postgresql log
-          path: |
-            src/pg_stat_monitor/regression.diffs
-            src/pg_stat_monitor/logfile
-          retention-days: 3