diff --git a/src/summarize_regions.cpp b/src/summarize_regions.cpp
index 0e461a1..f69f1d0 100644
--- a/src/summarize_regions.cpp
+++ b/src/summarize_regions.cpp
@@ -11,6 +11,8 @@
 #include <progress.hpp>
 #include <progress_bar.hpp>
 #include <spdlog/fmt/bundled/format.h>
+#include <spdlog/fmt/bundled/ranges.h>
+// TODO: switch to ranges.h once spdlog 0.0.19 is available for ubuntu
 
 // Protect against compilers without OpenMP
 #ifdef _OPENMP