diff --git a/src/main/java/me/itzg/helpers/modrinth/Loader.java b/src/main/java/me/itzg/helpers/modrinth/Loader.java
index 35802e09..8f8351bb 100644
--- a/src/main/java/me/itzg/helpers/modrinth/Loader.java
+++ b/src/main/java/me/itzg/helpers/modrinth/Loader.java
@@ -3,7 +3,9 @@
 public enum Loader {
   fabric("mods"),
   forge("mods"),
-  spigot("plugins");
+  spigot("plugins"),
+  paper("plugins"),
+  purpur("plugins");
 
   private final String type;
 
diff --git a/src/main/java/me/itzg/helpers/modrinth/ModrinthCommand.java b/src/main/java/me/itzg/helpers/modrinth/ModrinthCommand.java
index a5580ca8..bd6cc1e4 100644
--- a/src/main/java/me/itzg/helpers/modrinth/ModrinthCommand.java
+++ b/src/main/java/me/itzg/helpers/modrinth/ModrinthCommand.java
@@ -221,7 +221,7 @@ private List<Version> getVersionsForProject(String project) {
         try {
             return fetch(Uris.populateToUri(
                 baseUrl + "/project/{id|slug}/version?loaders={loader}&game_versions={gameVersion}",
-                project, loader.toString(), gameVersion
+                project, arrayOfQuoted(loader.toString()), arrayOfQuoted(gameVersion)
             ))
                 .userAgentCommand("modrinth")
                 .toObjectList(Version.class)
@@ -241,6 +241,10 @@ private Version getVersionFromId(String versionId) {
                 .execute();
     }
 
+    private String arrayOfQuoted(String value) {
+        return "[\"" + value + "\"]";
+    }
+
     private Stream<? extends Path> processProject(String projectRef) {
         log.debug("Starting with projectRef={}", projectRef);