diff --git a/scripts/dockcross-manylinux-download-cache-and-build-module-wheels.sh b/scripts/dockcross-manylinux-download-cache-and-build-module-wheels.sh
index 69e44280..7fddd06c 100755
--- a/scripts/dockcross-manylinux-download-cache-and-build-module-wheels.sh
+++ b/scripts/dockcross-manylinux-download-cache-and-build-module-wheels.sh
@@ -7,7 +7,7 @@ curl https://data.kitware.com/api/v1/file/592dd8068d777f16d01e1a92/download -o z
 gunzip -d zstd-1.2.0-linux.tar.gz
 tar xf zstd-1.2.0-linux.tar
 
-curl -L https://github.com/InsightSoftwareConsortium/ITKPythonBuilds/releases/download/${ITK_PACKAGE_VERSION:=v5.0.1}/ITKPythonBuilds-linux.tar.zst -O
+curl -L https://github.com/InsightSoftwareConsortium/ITKPythonBuilds/releases/download/${ITK_PACKAGE_VERSION:=v5.1rc02}/ITKPythonBuilds-linux.tar.zst -O
 ./zstd-1.2.0-linux/bin/unzstd ITKPythonBuilds-linux.tar.zst -o ITKPythonBuilds-linux.tar
 tar xf ITKPythonBuilds-linux.tar
 
diff --git a/scripts/macpython-download-cache-and-build-module-wheels.sh b/scripts/macpython-download-cache-and-build-module-wheels.sh
index 95a8ef23..5de68c01 100755
--- a/scripts/macpython-download-cache-and-build-module-wheels.sh
+++ b/scripts/macpython-download-cache-and-build-module-wheels.sh
@@ -12,7 +12,7 @@ SDK_PATH='/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/D
 if test ! -e $SDK_PATH; then
   sudo ln -s /Applications/Xcode_9.4.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk
 fi
-aria2c -c --file-allocation=none -o ITKPythonBuilds-macosx.tar.zst -s 10 -x 10 https://github.com/InsightSoftwareConsortium/ITKPythonBuilds/releases/download/${ITK_PACKAGE_VERSION:=v5.0.1}/ITKPythonBuilds-macosx.tar.zst
+aria2c -c --file-allocation=none -o ITKPythonBuilds-macosx.tar.zst -s 10 -x 10 https://github.com/InsightSoftwareConsortium/ITKPythonBuilds/releases/download/${ITK_PACKAGE_VERSION:=v5.1rc02}/ITKPythonBuilds-macosx.tar.zst
 unzstd ITKPythonBuilds-macosx.tar.zst -o ITKPythonBuilds-macosx.tar
 PATH="/usr/local/opt/gnu-tar/libexec/gnubin:$PATH"
 tar xf ITKPythonBuilds-macosx.tar --checkpoint=10000 --checkpoint-action=dot