diff --git a/DESCRIPTION b/DESCRIPTION
index 88a20af..fd8aed5 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Type: Package
 Package: detrendr
 Title: Detrend Images
-Version: 0.6.15
+Version: 0.6.16
 Authors@R: c(
     person("Rory", "Nolan", , "rorynoolan@gmail.com", role = c("aut", "cre"),
            comment = c(ORCID = "0000-0002-5239-4043")),
diff --git a/src/Makevars b/src/Makevars
index 10829ad..7a518c8 100644
--- a/src/Makevars
+++ b/src/Makevars
@@ -1 +1,2 @@
 PKG_LIBS += $(shell ${R_HOME}/bin/Rscript -e "RcppParallel::RcppParallelLibs()")
+PKG_CXXFLAGS += $(shell ${R_HOME}/bin/Rscript -e "RcppParallel::CxxFlags()")
diff --git a/src/Makevars.win b/src/Makevars.win
index 0864658..d4000c5 100644
--- a/src/Makevars.win
+++ b/src/Makevars.win
@@ -1,4 +1,5 @@
 PKG_CXXFLAGS += -DRCPP_PARALLEL_USE_TBB=1
+PKG_CXXFLAGS += $(shell "${R_HOME}/bin${R_ARCH_BIN}/Rscript.exe" -e "RcppParallel::CxxFlags()")
 
 PKG_LIBS += $(shell "${R_HOME}/bin${R_ARCH_BIN}/Rscript.exe" \
               -e "RcppParallel::RcppParallelLibs()")