diff --git a/lib/YAMLScript/FFI.hs b/lib/YAMLScript/FFI.hs
--- a/lib/YAMLScript/FFI.hs
+++ b/lib/YAMLScript/FFI.hs
@@ -27,7 +27,7 @@
   c_graal_tear_down_isolate :: GraalIsolateThread -> IO CInt
 
 -- | Foreign function interface to load_ys_to_json
-foreign import capi "libys.0.2.4.h load_ys_to_json"
+foreign import capi "libys.0.2.5.h load_ys_to_json"
   c_load_ys_to_json :: GraalIsolateThread -> CString -> IO CString
 
 -- | Create a GraalVM isolate and run an action with it
diff --git a/test/Test.hs b/test/Test.hs
--- a/test/Test.hs
+++ b/test/Test.hs
@@ -22,7 +22,7 @@
         [("data", Aeson.object [("foo", Aeson.String "bar")])]
 
     it "evaluates YAMLScript function call" $ do
-      result <- loadYAMLScript "!yamlscript/v0\nadd(40, 2)"
+      result <- loadYAMLScript "!ys-0\nadd(40, 2)"
       result `shouldBe` Aeson.object [("data", Aeson.Number 42)]
 
     it "loads from file" $ do
@@ -31,7 +31,7 @@
         [("data", Aeson.object [("test", Aeson.String "value")])]
 
     it "handles errors gracefully" $ do
-      result <- loadYAMLScript "!yamlscript/v0\ninvalid: syntax"
+      result <- loadYAMLScript "!ys-0\ninvalid: syntax"
       case result of
         Aeson.Object obj -> case KeyMap.lookup (Key.fromString "error") obj of
           Just _ -> return () -- Error present, test passes
diff --git a/test/YAMLScript/Tests.hs b/test/YAMLScript/Tests.hs
--- a/test/YAMLScript/Tests.hs
+++ b/test/YAMLScript/Tests.hs
@@ -42,18 +42,18 @@
 yamlscriptTests :: Spec
 yamlscriptTests = describe "YAMLScript Features" $ do
   it "evaluates arithmetic expressions" $ do
-    result <- loadYAMLScript "!yamlscript/v0\nadd(2, 3)"
+    result <- loadYAMLScript "!ys-0\nadd(2, 3)"
     result `shouldBe` Aeson.object [("data", Aeson.Number 5)]
 
   it "evaluates function calls" $ do
-    result <- loadYAMLScript "!yamlscript/v0\ninc(41)"
+    result <- loadYAMLScript "!ys-0\ninc(41)"
     result `shouldBe` Aeson.object [("data", Aeson.Number 42)]
 
 -- | Test error handling
 errorTests :: Spec
 errorTests = describe "Error Handling" $ do
   it "returns error on invalid YAMLScript" $ do
-    result <- loadYAMLScript "!yamlscript/v0\ninvalid: syntax"
+    result <- loadYAMLScript "!ys-0\ninvalid: syntax"
     case result of
       Aeson.Object obj -> case KeyMap.lookup (Key.fromString "error") obj of
         Just _ -> return () -- Error present, test passes
diff --git a/yamlscript.cabal b/yamlscript.cabal
--- a/yamlscript.cabal
+++ b/yamlscript.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               yamlscript
-version:            0.2.4.0
+version:            0.2.5.0
 synopsis:           Haskell bindings for YAMLScript
 description:        Haskell bindings for YAMLScript, a functional
                     programming language with YAML syntax.