diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index e4825cd..ba15a58 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -13,9 +13,9 @@ jobs:
 
     steps:
     - name: checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: checkout datasketches-cpp
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: apache/datasketches-cpp
         path: datasketches-cpp
@@ -24,7 +24,7 @@ jobs:
     - name: install PostgreSQL
       run: |
         sudo apt update
-        sudo apt -y install postgresql-14 postgresql-client-14 postgresql-server-dev-14 libpq-dev
+        sudo apt -y install postgresql-16 postgresql-client-16 postgresql-server-dev-16 libpq-dev
     - name: make
       run: make
     - name: install
diff --git a/Dockerfile b/Dockerfile
index 488c2ae..c2f335c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,7 +18,7 @@
 ARG BASE_IMAGE_VERSION=latest
 
 ARG DATASKETCHES_CPP_HASH=8135b65408947694e13bd131038889e439847aa2
-ARG DATASKETCHES_CPP_VERSION=5.0.0
+ARG DATASKETCHES_CPP_VERSION=5.2.0
 
 FROM postgres:$BASE_IMAGE_VERSION
 
diff --git a/Makefile b/Makefile
index a49be94..9869f28 100644
--- a/Makefile
+++ b/Makefile
@@ -55,7 +55,7 @@ CORE = datasketches-cpp
 BOOST = boost
 BOOST_VER = 1.75.0
 BOOST_FILE = boost_$(subst .,_,$(BOOST_VER))
-BOOST_URL = https://boostorg.jfrog.io/artifactory/main/release/$(BOOST_VER)/source/$(BOOST_FILE).zip
+BOOST_URL = https://archives.boost.io/release/$(BOOST_VER)/source/$(BOOST_FILE).zip
 
 PG_CPPFLAGS = -fPIC -I/usr/local/include -I$(BOOST) -I$(CORE)/common/include \
   -I$(CORE)/kll/include \
diff --git a/package.sh b/package.sh
index 174040b..7d9b7b4 100755
--- a/package.sh
+++ b/package.sh
@@ -32,7 +32,7 @@ if [ -z $2 ]; then
 fi
 
 # version of datasketches-cpp core library to include
-CORETAG=5.0.0
+CORETAG=5.2.0
 
 DST=datasketches-$VER