diff --git a/src/main/java/io/gitlab/jfronny/dynres/mixin/ServerPropertiesHandlerMixin.java b/src/main/java/io/gitlab/jfronny/dynres/mixin/ServerPropertiesHandlerMixin.java
index b187605..d43c21c 100644
--- a/src/main/java/io/gitlab/jfronny/dynres/mixin/ServerPropertiesHandlerMixin.java
+++ b/src/main/java/io/gitlab/jfronny/dynres/mixin/ServerPropertiesHandlerMixin.java
@@ -17,7 +17,6 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
-import java.util.Base64;
 
 @Mixin(ServerPropertiesHandler.class)
 public class ServerPropertiesHandlerMixin {
@@ -33,9 +32,11 @@ public class ServerPropertiesHandlerMixin {
             resourcePackSha1 = "";
             if (Cfg.hashResources) {
                 try {
-                    MessageDigest digest = MessageDigest.getInstance("SHA-256");
-                    byte[] hash = digest.digest(Files.readAllBytes(DynRes.resFile));
-                    resourcePackSha1 = Base64.getEncoder().encodeToString(hash);
+                    StringBuilder result = new StringBuilder();
+                    for (byte b : MessageDigest.getInstance("SHA-1").digest(Files.readAllBytes(DynRes.resFile))) {
+                        result.append(Integer.toString((b & 0xff) + 0x100, 16).substring(1));
+                    }
+                    resourcePackSha1 = result.toString();
                     DynRes.LOGGER.info("Set hash to " + resourcePackSha1);
                 } catch (IOException | NoSuchAlgorithmException e) {
                     DynRes.LOGGER.error("Failed to get hash, continuing with empty", e);