diff --git a/functions/imagemagick/main.py b/functions/imagemagick/main.py
index 721fdbb6e18..6ba2476e753 100644
--- a/functions/imagemagick/main.py
+++ b/functions/imagemagick/main.py
@@ -70,7 +70,7 @@ def __blur_image(current_blob):
 
     # Blur the image using ImageMagick.
     with Image(filename=temp_local_filename) as image:
-        image.resize(*image.size, blur=16, filter="hamming")
+        image.blur(radius=0, sigma=16)
         image.save(filename=temp_local_filename)
 
     print(f"Image {file_name} was blurred.")
diff --git a/functions/imagemagick/main_test.py b/functions/imagemagick/main_test.py
index bfbbe59e4ab..79f4459958f 100644
--- a/functions/imagemagick/main_test.py
+++ b/functions/imagemagick/main_test.py
@@ -92,4 +92,4 @@ def test_blur_image(storage_client, image_mock, os_mock, capsys):
     assert f"Image {filename} was blurred." in out
     assert f"Blurred image uploaded to: gs://{blur_bucket}/{filename}" in out
     assert os_mock.remove.called
-    assert image_mock.resize.called
+    assert image_mock.blur.called
diff --git a/functions/v2/imagemagick/main.py b/functions/v2/imagemagick/main.py
index 1c8528600ce..53e817ba288 100644
--- a/functions/v2/imagemagick/main.py
+++ b/functions/v2/imagemagick/main.py
@@ -73,7 +73,7 @@ def __blur_image(current_blob):
 
     # Blur the image using ImageMagick.
     with Image(filename=temp_local_filename) as image:
-        image.resize(*image.size, blur=16, filter="hamming")
+        image.blur(radius=0, sigma=16)
         image.save(filename=temp_local_filename)
 
     print(f"Image {file_name} was blurred.")
diff --git a/functions/v2/imagemagick/main_test.py b/functions/v2/imagemagick/main_test.py
index 2d04240b269..ef83ab98ec4 100644
--- a/functions/v2/imagemagick/main_test.py
+++ b/functions/v2/imagemagick/main_test.py
@@ -96,4 +96,4 @@ def test_blur_image(storage_client, image_mock, os_mock, capsys):
     assert f"Image {filename} was blurred." in out
     assert f"Blurred image uploaded to: gs://{blur_bucket}/{filename}" in out
     assert os_mock.remove.called
-    assert image_mock.resize.called
+    assert image_mock.blur.called