diff --git a/models/libplacebo/anime4k-a+a.glsl b/models/libplacebo/anime4k-v4-a+a.glsl
similarity index 100%
rename from models/libplacebo/anime4k-a+a.glsl
rename to models/libplacebo/anime4k-v4-a+a.glsl
diff --git a/models/libplacebo/anime4k-a.glsl b/models/libplacebo/anime4k-v4-a.glsl
similarity index 100%
rename from models/libplacebo/anime4k-a.glsl
rename to models/libplacebo/anime4k-v4-a.glsl
diff --git a/models/libplacebo/anime4k-b+b.glsl b/models/libplacebo/anime4k-v4-b+b.glsl
similarity index 100%
rename from models/libplacebo/anime4k-b+b.glsl
rename to models/libplacebo/anime4k-v4-b+b.glsl
diff --git a/models/libplacebo/anime4k-b.glsl b/models/libplacebo/anime4k-v4-b.glsl
similarity index 100%
rename from models/libplacebo/anime4k-b.glsl
rename to models/libplacebo/anime4k-v4-b.glsl
diff --git a/models/libplacebo/anime4k-c+a.glsl b/models/libplacebo/anime4k-v4-c+a.glsl
similarity index 100%
rename from models/libplacebo/anime4k-c+a.glsl
rename to models/libplacebo/anime4k-v4-c+a.glsl
diff --git a/models/libplacebo/anime4k-c.glsl b/models/libplacebo/anime4k-v4-c.glsl
similarity index 100%
rename from models/libplacebo/anime4k-c.glsl
rename to models/libplacebo/anime4k-v4-c.glsl
diff --git a/models/libplacebo/anime4k-gan.glsl b/models/libplacebo/anime4k-v4.1-gan.glsl
similarity index 100%
rename from models/libplacebo/anime4k-gan.glsl
rename to models/libplacebo/anime4k-v4.1-gan.glsl
diff --git a/scripts/download_merge_anime4k_glsl.py b/scripts/download_merge_anime4k_glsl.py
index 35a5c57..2dd5b63 100755
--- a/scripts/download_merge_anime4k_glsl.py
+++ b/scripts/download_merge_anime4k_glsl.py
@@ -78,7 +78,13 @@ def download_and_combine_files():
             response.raise_for_status()
             file_contents += response.text + "\n"
 
-        with (SHADERS_DIR / Path(f"anime4k-{mode}.glsl")).open("w") as output_file:
+        version = "v4"
+        if mode == "gan":
+            version = "v4.1"
+
+        with (SHADERS_DIR / Path(f"anime4k-{version}-{mode}.glsl")).open(
+            "w"
+        ) as output_file:
             output_file.write(file_contents)