diff --git a/CHANGELOG.md b/CHANGELOG.md
index f9250af..1ced8d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- TypeError calling `sicd_area_plane.compute_suitable_rc_plane` with `numpy>=2.5.0`
+
 
 ## [0.1.0] - 2026-08-03
 
diff --git a/pyproject.toml b/pyproject.toml
index 440d64e..5b9081c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ readme = "README.md"
 license = "MIT"
 license-files = ["LICENSE"]
 classifiers = [
-  "Development Status :: 1 - Planning",
+  "Development Status :: 3 - Alpha",
   "Intended Audience :: Science/Research",
   "Topic :: Scientific/Engineering",
   "Programming Language :: Python",
diff --git a/sarkit_processing/sicd_area_plane.py b/sarkit_processing/sicd_area_plane.py
index e3a7a63..6970399 100644
--- a/sarkit_processing/sicd_area_plane.py
+++ b/sarkit_processing/sicd_area_plane.py
@@ -168,7 +168,7 @@ def compute_suitable_rc_plane(sicd_xmltree):
     )
     ground_resolution_proj = mats.M_GPXY_IL * np.array([delta_xrow, delta_ycol])
 
-    eigen_val, eigen_vec = np.linalg.eig(
+    eigen_val, eigen_vec = np.linalg.eigh(
         ground_resolution_proj @ ground_resolution_proj.T
     )
     max_val = np.argmax(eigen_val)