diff --git a/.changes/fix-android-proguard.md b/.changes/fix-android-proguard.md
new file mode 100644
index 000000000..f6e7dafae
--- /dev/null
+++ b/.changes/fix-android-proguard.md
@@ -0,0 +1,5 @@
+---
+"tauri": patch:bug
+---
+
+Add a Proguard rule to prevent custom JSON deserializer and serializer classes from being optimized away.
diff --git a/crates/tauri/mobile/android/proguard-rules.pro b/crates/tauri/mobile/android/proguard-rules.pro
index ab4493362..e21b5beb4 100644
--- a/crates/tauri/mobile/android/proguard-rules.pro
+++ b/crates/tauri/mobile/android/proguard-rules.pro
@@ -28,4 +28,14 @@
   *;
 }
 
+-keep @com.fasterxml.jackson.databind.annotation.JsonDeserialize public class * {
+  *;
+}
+
+-keep @com.fasterxml.jackson.databind.annotation.JsonSerialize public class * {
+  *;
+}
+
 -keep class * extends com.fasterxml.jackson.databind.JsonDeserializer { *; }
+
+-keep class * extends com.fasterxml.jackson.databind.JsonSerializer { *; }