diff --git a/exemplar/exemplar.cpp b/exemplar/exemplar.cpp
index cf8b48c5..00cfdc96 100644
--- a/exemplar/exemplar.cpp
+++ b/exemplar/exemplar.cpp
@@ -99,7 +99,7 @@ PLUGIN::PLUGIN(TARGET_API_BASE_INSTANCE_TYPE inInstance)
 PLUGINCORE::PLUGINCORE(DfxPlugin& inInstance)
   : DfxPluginCore(inInstance) {
   /* determine the size of the largest window size */
-  constexpr auto maxframe = *std::max_element(buffersizes.cbegin(), buffersizes.cend());
+  constexpr auto maxframe = *std::ranges::max_element(buffersizes);
 
   /* add some leeway? */
   in0.assign(maxframe, 0.f);
diff --git a/exemplar/exemplar.h b/exemplar/exemplar.h
index 80329418..e796b445 100644
--- a/exemplar/exemplar.h
+++ b/exemplar/exemplar.h
@@ -159,6 +159,6 @@ class PLUGINCORE final : public DfxPluginCore {
   dfx::UniqueOpaqueType<rfftw_plan, rfftw_destroy_plan> plan, rplan;
 
   /* result of ffts ( */
-  float fftr[*std::max_element(buffersizes.cbegin(), buffersizes.cend())] {};
+  float fftr[*std::ranges::max_element(buffersizes)] {};
 
 };
diff --git a/slowft/slowft.cpp b/slowft/slowft.cpp
index 232fea69..14201827 100644
--- a/slowft/slowft.cpp
+++ b/slowft/slowft.cpp
@@ -76,7 +76,7 @@ PLUGIN::PLUGIN(TARGET_API_BASE_INSTANCE_TYPE inInstance)
 PLUGINCORE::PLUGINCORE(DfxPlugin& inInstance)
   : DfxPluginCore(inInstance) {
   /* determine the size of the largest window size */
-  constexpr auto maxframe = *std::max_element(buffersizes.cbegin(), buffersizes.cend());
+  constexpr auto maxframe = *std::ranges::max_element(buffersizes);
 
   /* add some leeway? */
   in0.assign(maxframe, 0.f);
diff --git a/windowingstub/windowingstub.cpp b/windowingstub/windowingstub.cpp
index e230ebd3..11acff2a 100644
--- a/windowingstub/windowingstub.cpp
+++ b/windowingstub/windowingstub.cpp
@@ -79,7 +79,7 @@ PLUGIN::PLUGIN(TARGET_API_BASE_INSTANCE_TYPE inInstance)
 PLUGINCORE::PLUGINCORE(DfxPlugin& inInstance)
   : DfxPluginCore(inInstance) {
   /* determine the size of the largest window size */
-  constexpr auto maxframe = *std::max_element(buffersizes.cbegin(), buffersizes.cend());
+  constexpr auto maxframe = *std::ranges::max_element(buffersizes);
 
   /* add some leeway? */
   in0.assign(maxframe, 0.f);