diff --git a/include/rngxx.h b/include/rngxx.hpp
similarity index 100%
rename from include/rngxx.h
rename to include/rngxx.hpp
diff --git a/include/rngxx/crand.h b/include/rngxx/crand.h
index 75fdcf2..89e2914 100644
--- a/include/rngxx/crand.h
+++ b/include/rngxx/crand.h
@@ -2,7 +2,7 @@
 
 #include "internal/common.h"
 
-#include <rng.h>
+#include <rngxx.hpp>
 #include "internal/mem.h"
 
 namespace rng
diff --git a/src/rng.cpp b/src/rng.cpp
index 80b9d4d..dde3cdf 100644
--- a/src/rng.cpp
+++ b/src/rng.cpp
@@ -1,5 +1,5 @@
 
-#include <rngxx.h>
+#include <rngxx.hpp>
 #include <range.h>
 
 constexpr const static util::range<f64> SAMPLE_RANGE { 0.0, 1.0 };
diff --git a/src/rng/crand.cpp b/src/rng/crand.cpp
index 3cc0251..1f06bba 100644
--- a/src/rng/crand.cpp
+++ b/src/rng/crand.cpp
@@ -5,7 +5,7 @@
 #include <climits>
 #include <cmath>
 
-#include <rng.h>
+#include <rngxx.hpp>
 #include <mem.h>
 
 #include <rng/crand.h>