diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1ccc5a0..03cfa5e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.20)
 include(cmake/color.cmake)
-set(BLT_VERSION 0.20.15)
+set(BLT_VERSION 0.20.16)
 set(BLT_TEST_VERSION 0.0.1)
 
 set(BLT_TARGET BLT)
diff --git a/include/blt/math/matrix.h b/include/blt/math/matrix.h
index bdd51bc..ec1a810 100644
--- a/include/blt/math/matrix.h
+++ b/include/blt/math/matrix.h
@@ -179,7 +179,7 @@ namespace blt
              * Takes a value stored across a row, taking one from each column in the specified row
              * @param row the row to extract from. defaults to the first row
              */
-            constexpr inline vec<T, columns> vec_from_column_row(blt::u32 row = 0)
+            constexpr inline vec<T, columns> vec_from_column_row(blt::u32 row = 0) const
             {
                 vec<T, columns> ret;
                 for (blt::u32 j = 0; j < columns; j++)