diff --git a/Math/Numerics/Interpolation/LinearInterpolation.php b/Math/Numerics/Interpolation/LinearInterpolation.php
index f149d95ce..47efe8399 100644
--- a/Math/Numerics/Interpolation/LinearInterpolation.php
+++ b/Math/Numerics/Interpolation/LinearInterpolation.php
@@ -29,7 +29,7 @@ final class LinearInterpolation implements InterpolationInterface
         /**
      * Points for spline interpolation
      *
-     * @var array
+     * @var array<int, array{x:int|float, y:int|float}>
      * @since 1.0.0
      */
     private array $points = [];
@@ -61,7 +61,7 @@ final class LinearInterpolation implements InterpolationInterface
     /**
      * Constructor.
      *
-     * @param array $points Points to create the interpolation with
+     * @param array<int, array{x:int|float, y:int|float}> $points Points to create the interpolation with
      *
      * @since 1.0.0
      */