diff --git a/callouts/callouts-gen.mako.hpp b/callouts/callouts-gen.mako.hpp
index 7d28a3a..285092e 100644
--- a/callouts/callouts-gen.mako.hpp
+++ b/callouts/callouts-gen.mako.hpp
@@ -14,7 +14,7 @@
 
 constexpr auto callouts =
 {
-% for key, value in sorted(calloutsMap.iteritems()):
+% for key, value in sorted(calloutsMap.items()):
     std::make_tuple("${key}", "${value}"),
 % endfor
 };
diff --git a/tools/phosphor-logging/templates/elog-process-metadata.mako.cpp b/tools/phosphor-logging/templates/elog-process-metadata.mako.cpp
index 267413d..a846c2f 100644
--- a/tools/phosphor-logging/templates/elog-process-metadata.mako.cpp
+++ b/tools/phosphor-logging/templates/elog-process-metadata.mako.cpp
@@ -15,7 +15,7 @@
 
 extern const std::map<metadata::Metadata,
                       std::function<metadata::associations::Type>> meta = {
-    % for key, value in metadata_process.iteritems():
+    % for key, value in metadata_process.items():
 <%
         type = value.replace(".", "::")
 %>\