diff --git a/webp-imageio/src/main/resources/META-INF/proguard/web-imageio.pro b/webp-imageio/src/main/resources/META-INF/proguard/web-imageio.pro
new file mode 100644
index 0000000..a0fe94a
--- /dev/null
+++ b/webp-imageio/src/main/resources/META-INF/proguard/web-imageio.pro
@@ -0,0 +1,3 @@
+-keep class com.luciad.imageio.webp.WebP { *; }
+-keep class com.luciad.imageio.webp.WebPImageWriterSpi { *; }
+-keep class com.luciad.imageio.webp.WebPImageReaderSpi { *; }