diff --git a/src/meson.build b/src/meson.build
index 93d68f3..6d17d3d 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -54,6 +54,7 @@
   'net/addr/ip.cpp',
   'net/addr/subnet.cpp',
   'numeric/endian.cpp',
+  'numeric/str.cpp',
   'pinned.cpp',
   'raw.cpp',
   'signal.cpp',
diff --git a/src/numeric/str.cpp b/src/numeric/str.cpp
new file mode 100644
index 0000000..7c3ac13
--- /dev/null
+++ b/src/numeric/str.cpp
@@ -0,0 +1,7 @@
+#include <stdplus/numeric/str.hpp>
+
+namespace stdplus::detail
+{
+template char* uintToStr<16>(char*, uintptr_t, uint8_t) noexcept;
+template char* uintToStr<10>(char*, uintptr_t, uint8_t) noexcept;
+} // namespace stdplus::detail