diff --git a/GNUmakefile b/GNUmakefile
index 14893466..b782e0b8 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -726,7 +726,7 @@ out/apk/TildeFriends-arm-%.unsigned.apk:
 	@cp out/apk/classes.dex out/apk-arm-$(BUILD_TYPE)/
 	@cd out/apk-arm-$(BUILD_TYPE) && zip -u ../../$@.zip -q -9 -r . && cd ../../
 	@zip -u $@.zip -q $(RAW_FILES)
-	@rm -f $@ && $(ANDROID_BUILD_TOOLS)/zipalign -z 4 $@.zip $@
+	@$(ANDROID_BUILD_TOOLS)/zipalign -f 4 $@.zip $@
 
 out/apk/TildeFriends-x86-%.unsigned.apk:
 	@mkdir -p $(dir $@) out/apk-x86-$(BUILD_TYPE)/lib/x86_64/ out/apk-x86-$(BUILD_TYPE)/lib/x86/
@@ -739,13 +739,18 @@ out/apk/TildeFriends-x86-%.unsigned.apk:
 	@cp out/apk/classes.dex out/apk-x86-$(BUILD_TYPE)/
 	@cd out/apk-x86-$(BUILD_TYPE) && zip -u ../../$@.zip -q -9 -r . && cd ../../
 	@zip -u $@.zip -q $(RAW_FILES)
-	@rm -f $@ && $(ANDROID_BUILD_TOOLS)/zipalign -z 4 $@.zip $@
+	@$(ANDROID_BUILD_TOOLS)/zipalign -f 4 $@.zip $@
 
 out/%.apk: out/apk/%.unsigned.apk
 	@echo "[apksigner] $(notdir $@)"
 	@$(ANDROID_BUILD_TOOLS)/apksigner sign --ks .keys/android.jks --ks-key-alias androidKey --ks-pass pass:android --key-pass pass:android --min-sdk-version $(ANDROID_MIN_SDK_VERSION) --out $@ $<
 
-release-apk: out/TildeFriends-arm-release.apk out/TildeFriends-x86-release.apk
+out/%.zopfli.apk: out/%.apk
+	@echo "[zopfli] $(notdir $@)"
+	$(ANDROID_BUILD_TOOLS)/zipalign -f -z 4 $< $@.zopfli
+	@$(ANDROID_BUILD_TOOLS)/apksigner sign --ks .keys/android.jks --ks-key-alias androidKey --ks-pass pass:android --key-pass pass:android --min-sdk-version $(ANDROID_MIN_SDK_VERSION) --out $@ $@.zopfli
+
+release-apk: out/TildeFriends-arm-release.zopfli.apk out/TildeFriends-x86-release.zopfli.apk
 .PHONY: release-apk
 
 releaseapkgo: out/TildeFriends-arm-release.apk
@@ -859,9 +864,9 @@ dist: release-apk iosrelease-ipa
 		--exclude=deps/zlib/doc \
 		-caf dist/tildefriends-$(VERSION_NUMBER).tar.xz out/tildefriends-$(VERSION_NUMBER)
 	@echo "[cp] TildeFriends-x86-$(VERSION_NUMBER).apk"
-	@cp out/TildeFriends-x86-release.apk dist/TildeFriends-x86-$(VERSION_NUMBER).apk
+	@cp out/TildeFriends-x86-release.zopfli.apk dist/TildeFriends-x86-$(VERSION_NUMBER).apk
 	@echo "[cp] TildeFriends-arm-$(VERSION_NUMBER).apk"
-	@cp out/TildeFriends-arm-release.apk dist/TildeFriends-arm-$(VERSION_NUMBER).apk
+	@cp out/TildeFriends-arm-release.zopfli.apk dist/TildeFriends-arm-$(VERSION_NUMBER).apk
 	@echo "[cp] TildeFriends-$(VERSION_NUMBER).ipa"
 	@cp out/tildefriends-release.ipa dist/TildeFriends-$(VERSION_NUMBER).ipa
 .PHONY: dist