diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/AtlasUtilities.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/AtlasUtilities.cs
index 0ad986632..6d83c0438 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/AtlasUtilities.cs
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/AtlasUtilities.cs
@@ -782,7 +782,7 @@ namespace Spine.Unity.AttachmentTools {
 				// at a 270 degree region, u2/v2 deltas and atlas width/height are swapped, and delta-v is negative.
 				float du = uvRect.width; // u2 - u;
 				float dv = uvRect.height; // v - v2;
-				float atlasAspectRatio = page.width / page.height;
+				float atlasAspectRatio = (float)page.width / (float)page.height;
 				u2 = u + (dv / atlasAspectRatio);
 				v2 = v - (du * atlasAspectRatio);
 			}
diff --git a/spine-unity/Assets/Spine/package.json b/spine-unity/Assets/Spine/package.json
index b083688ff..65794e5bf 100644
--- a/spine-unity/Assets/Spine/package.json
+++ b/spine-unity/Assets/Spine/package.json
@@ -2,7 +2,7 @@
 	"name": "com.esotericsoftware.spine.spine-unity",
 	"displayName": "spine-unity Runtime",
 	"description": "This plugin provides the spine-unity runtime core.",
-	"version": "4.2.49",
+	"version": "4.2.50",
 	"unity": "2018.3",
 	"author": {
 		"name": "Esoteric Software",