diff --git a/CHANGELOG.md b/CHANGELOG.md
index a71a76df7..d05ea3c41 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 ## 1.26.3
 
+### Improvements
+- Reduce stderr noise in PIL and rasterio sources ([#1397](../../pull/1397))
+
 ### Bug Fixes
 - Fix an issue emitting geojson annotations ([#1395](../../pull/1395))
 - Fix an issue when tifffile reports no key frame ([#1396](../../pull/1396))
diff --git a/sources/pil/large_image_source_pil/__init__.py b/sources/pil/large_image_source_pil/__init__.py
index 361fab9be..5ac2fb726 100644
--- a/sources/pil/large_image_source_pil/__init__.py
+++ b/sources/pil/large_image_source_pil/__init__.py
@@ -202,8 +202,10 @@ def _fromRawpy(self, largeImagePath):
         try:
             import rawpy
 
-            rgb = rawpy.imread(largeImagePath).postprocess()
-            rgb = large_image.tilesource.utilities._imageToNumpy(rgb)
+            rgb = rawpy._rawpy.RawPy(1)
+            rgb.open_file(largeImagePath)
+            rgb = rgb.postprocess()
+            rgb = large_image.tilesource.utilities._imageToNumpy(rgb)[0]
             if rgb.shape[2] == 2:
                 rgb = rgb[:, :, :1]
             elif rgb.shape[2] > 3:
diff --git a/sources/rasterio/large_image_source_rasterio/__init__.py b/sources/rasterio/large_image_source_rasterio/__init__.py
index f40ebb06c..20bf8e60a 100644
--- a/sources/rasterio/large_image_source_rasterio/__init__.py
+++ b/sources/rasterio/large_image_source_rasterio/__init__.py
@@ -52,6 +52,7 @@
     pass
 
 warnings.filterwarnings('ignore', category=rio.errors.NotGeoreferencedWarning, module='rasterio')
+rio._env.code_map.pop(1, None)
 
 
 def make_crs(projection):