diff --git a/.github/workflows/package-build.yml b/.github/workflows/package-build.yml
index e501009..1462c2c 100644
--- a/.github/workflows/package-build.yml
+++ b/.github/workflows/package-build.yml
@@ -19,7 +19,7 @@ jobs:
     name: ${{ matrix.config.os }} (${{ matrix.config.r }})
 
     strategy:
-      fail-fast: true
+      fail-fast: false
       matrix:
         config:
           - { os: ubuntu-latest, r: "release" }
diff --git a/configure b/configure
index 1a1cd49..0b04492 100755
--- a/configure
+++ b/configure
@@ -5,8 +5,9 @@ CXX_STD=CXX17
 ITKRCMAKE=`${R_HOME}/bin/Rscript -e 'a<-ITKR:::itkIncludes(); cat(a)'`
 ITKRLIB=`${R_HOME}/bin/Rscript -e 'a<-ITKR:::itkLibs(); cat(a)'`
 compflags=`${R_HOME}/bin/Rscript -e 'a<-ITKR:::itkCompileFlags(); cat(a)'`
+osx_sysroot=""
 if [[ `uname` == 'Darwin' ]] ; then
-    compflags=" ${compflags} -isystem /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1 -stdlib=libc++ "
+    osx_sysroot=$(xcrun --show-sdk-path)
 fi
 ITKDIR=`${R_HOME}/bin/Rscript -e 'a<-ITKR:::itkDir(); cat(a)'`
 ITKTAG=`${R_HOME}/bin/Rscript -e 'env = asNamespace("ITKR"); if ("itkTag" %in% names(env)) cat(ITKR::itkTag()) else cat("")'`
@@ -50,7 +51,7 @@ fi
 echo $OSTYPE $needVCL_CAN_STATIC_CONST_INIT_FLOAT
 
 if [[ `uname` == 'Darwin' ]] ; then
-  PKG_CPPFLAGS="${PKG_CPPFLAGS} -I"/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1""
+  PKG_CPPFLAGS="${PKG_CPPFLAGS} -isysroot${osx_sysroot}"
 fi
 
 echo "PKG_CPPFLAGS=${PKG_CPPFLAGS} -I\${ITK} -I\${PWD} -I\${myantssource}/Examples/include/ \
@@ -68,6 +69,8 @@ echo "libants=\`find \${myantslib} -name \"lib*.a\"\`" >> Makevars
 # echo "libitk=\`find \\\`\$(R_HOME)/bin/Rscript -e 'ITKR:::itkLibs()'\\\` -name \"lib*.a\"\` " >> Makevars
 echo "libitk=\`find ${ITKRLIB} -name \"lib*.a\"\`" >> Makevars
 
+# Duplicate libants and libitk to avoid issues with the order of the libraries. This isn't a good solution but
+# cmake's suggested ordering didn't work either
 echo "PKG_LIBS=${PKG_LIBS} \${libants} \${libitk} \${libants} \${libitk} \
     \${libants} \${libitk} \${libants} \${libitk} \${libants} \${libitk}" >> Makevars
 
@@ -89,8 +92,7 @@ ThresholdImage LabelClustersUniquely SurfaceBasedSmoothing" >> Makevars
 
 # get / set up ANTs code
 antsgit=https://github.com/ANTsX/ANTs.git
-antstag=d87f266dffdbcef00407d260eab20f4738a98825 # with itk v5.3rc04 2023 nov 25
-antstag=1892feff83b792b563500f379fff7733da5465a6
+antstag=fc0589fd23826e53d51e67eb8a3f9a3d63e63a14 # 2025-02-26, label geometry measures
 antsrtag=`git log --pretty=format:'%H' -n 1`
 if [[ ! -s ants/CMakeLists.txt  ]] ; then
     git clone $antsbranch $antsgit ants
@@ -121,6 +123,7 @@ cd ./antb
 cmake -DITK_DIR:PATH=${ITKDIR} \
     -DCMAKE_C_FLAGS="${CMAKE_C_FLAGS} ${compflags} -DNDEBUG "\
     -DCMAKE_CXX_FLAGS="${CMAKE_CXX_FLAGS} ${compflags} -DNDEBUG "\
+    -DCMAKE_OSX_SYSROOT="${osx_sysroot}" \
     -DBUILD_SHARED_LIBS=OFF \
     -DANTS_INSTALL_LIBS_ONLY=ON \
     -DBUILD_ALL_ANTS_APPS=OFF \