diff --git a/setup.py b/setup.py
index 85e62fd..d07f3d7 100644
--- a/setup.py
+++ b/setup.py
@@ -78,7 +78,7 @@ def find_meta(meta, *path):
 		},
 		include_package_data=True,
 		install_requires=[
-			"numpy>=1.13.0",
+			"numpy>=1.14.0",
 			"scipy>=0.9",  # LinearNDInterpolator
 		],
 		extras_require=extras_require,
diff --git a/src/eppaurora/models/zhangpaxton2008.py b/src/eppaurora/models/zhangpaxton2008.py
index d874732..dc1179a 100644
--- a/src/eppaurora/models/zhangpaxton2008.py
+++ b/src/eppaurora/models/zhangpaxton2008.py
@@ -65,6 +65,7 @@ def read_zp2008_coeffs(file=None, nf=6, nKp=len(KP_BINC)):
 		file or COEFF_PATH,
 		delimiter=" ",
 		dtype=None,
+		encoding="utf-8",
 		names=["name"] + COEFF_NAMES,
 	)
 	# number of coefficients per Kp bin