diff --git a/pyproject.toml b/pyproject.toml
index 1cfabb12..059f58d9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,6 +41,7 @@ dependencies = [
     "matplotlib>=3.1.1,!=3.3.0,!=3.3.1,!=3.3.2",
     "animatplot-ng>=0.4.2",
     "h5netcdf",
+    "h5py",
     "Pillow>=6.1.0",
 ]
 
diff --git a/requirements.txt b/requirements.txt
index 73d9aefe..68a394a2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,6 +5,7 @@ natsort>=5.5.0
 matplotlib>=3.1.1,!=3.3.0,!=3.3.1,!=3.3.2
 animatplot>=0.4.2
 h5netcdf
+h5py
 Pillow>=6.1.0
 
 # Not required for Python>=3.8, but included because conda does not support