diff --git a/.github/workflows/postgresql-16-pgdg-package-pgxs.yml b/.github/workflows/postgresql-16-pgdg-package-pgxs.yml
index 77a3812f..7e849256 100644
--- a/.github/workflows/postgresql-16-pgdg-package-pgxs.yml
+++ b/.github/workflows/postgresql-16-pgdg-package-pgxs.yml
@@ -19,14 +19,15 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get install -y libreadline6-dev systemtap-sdt-dev wget \
-            zlib1g-dev libssl-dev libpam0g-dev bison flex libipc-run-perl
+            zlib1g-dev libssl-dev libpam0g-dev bison flex libipc-run-perl \
+            libjson-c-dev
           sudo /usr/bin/perl -MCPAN -e 'install IPC::RUN'
           sudo /usr/bin/perl -MCPAN -e 'install Text::Trim'
 
       - name: Install PG Distribution Postgresql 16
         run: |
           sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt \
-            $(lsb_release -cs)-pgdg main 16" > /etc/apt/sources.list.d/pgdg.list'
+            $(lsb_release -cs)-pgdg testing 16" > /etc/apt/sources.list.d/pgdg.list'
           sudo wget --quiet -O - \
             https://www.postgresql.org/media/keys/ACCC4CF8.asc |
             sudo apt-key add -
diff --git a/.github/workflows/postgresql-16-src-make.yml b/.github/workflows/postgresql-16-src-make.yml
index 773839ce..eaf34341 100644
--- a/.github/workflows/postgresql-16-src-make.yml
+++ b/.github/workflows/postgresql-16-src-make.yml
@@ -26,7 +26,7 @@ jobs:
             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
+            uuid-dev liblz4-dev libjson-c-dev
           sudo /usr/bin/perl -MCPAN -e 'install IPC::RUN'
           sudo /usr/bin/perl -MCPAN -e 'install Text::Trim'
 
diff --git a/.github/workflows/postgresql-16-src-meson.yml b/.github/workflows/postgresql-16-src-meson.yml
index 777d09e8..d6eb9d66 100644
--- a/.github/workflows/postgresql-16-src-meson.yml
+++ b/.github/workflows/postgresql-16-src-meson.yml
@@ -26,7 +26,7 @@ jobs:
             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 meson ninja-build
+            uuid-dev liblz4-dev meson ninja-build libjson-c-dev
           sudo /usr/bin/perl -MCPAN -e 'install IPC::RUN'
           sudo /usr/bin/perl -MCPAN -e 'install Text::Trim'