diff --git a/assets/icon-device.png b/assets/icon-device.png
index 2c7b4a9e7..87544ceb9 100644
Binary files a/assets/icon-device.png and b/assets/icon-device.png differ
diff --git a/assets/icon-saved-messages.png b/assets/icon-saved-messages.png
index 7c36e1521..5020a75cc 100644
Binary files a/assets/icon-saved-messages.png and b/assets/icon-saved-messages.png differ
diff --git a/deltachat-ffi/Doxyfile-logo.png b/deltachat-ffi/Doxyfile-logo.png
index 1ee7cffa8..a699d06a3 100644
Binary files a/deltachat-ffi/Doxyfile-logo.png and b/deltachat-ffi/Doxyfile-logo.png differ
diff --git a/python/tests/data/d.png b/python/tests/data/d.png
index 29ce9dd33..9c00e7cc8 100644
Binary files a/python/tests/data/d.png and b/python/tests/data/d.png differ
diff --git a/test-data/image/avatar64x64.png b/test-data/image/avatar64x64.png
index 78d282b96..4aa8f1804 100644
Binary files a/test-data/image/avatar64x64.png and b/test-data/image/avatar64x64.png differ