diff --git a/CHANGELOG.md b/CHANGELOG.md
index aacf8e2..5eaea3e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,10 @@ To be announced
 
 ### Fixed
 
+## [v0.2.3] - 2023-02-23
+
+Fixed bug where output file wasn't changing extension
+
 ## [v0.2.2] - 2023-02-23
 
 Few small quality of life tweaks
diff --git a/Parseltongue.csproj b/Parseltongue.csproj
index 02afad7..d41208b 100644
--- a/Parseltongue.csproj
+++ b/Parseltongue.csproj
@@ -8,7 +8,7 @@
         <AssemblyName>parseltongue</AssemblyName>
         <RootNamespace>parseltongue</RootNamespace>
         <IsPackable>false</IsPackable>
-        <Version>0.2.2</Version>
+        <Version>0.2.3</Version>
         <ApplicationIcon>snake-head.ico</ApplicationIcon>
     </PropertyGroup>
 
diff --git a/Program.cs b/Program.cs
index c9a4db7..62db9a0 100644
--- a/Program.cs
+++ b/Program.cs
@@ -154,7 +154,7 @@ private static void WriteBinFromDictionary(string file, Dictionary<string, strin
                 return;
             }
 
-            string modifiedPath = AddSuffix(file,"-modified");
+            string modifiedPath = Path.ChangeExtension(AddSuffix(file,"-modified"), ".bin");
 
             using (var fs = File.Open(modifiedPath, FileMode.Create))
             {
@@ -263,7 +263,7 @@ private static void BinToJson(FileInfo file)
                 
                 var jsonString = JsonConvert.SerializeObject(entries, Formatting.Indented);
                 
-                string modifiedPath = AddSuffix(file.FullName,"-modified");
+                string modifiedPath =  Path.ChangeExtension(AddSuffix(file.FullName,"-modified"), ".json");
                 File.WriteAllText(modifiedPath, jsonString);
             }
         }
diff --git a/README.md b/README.md
index a02f600..ccb8668 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this project adheres to [Semantic Versioning](http://semver.org/).
 
+### [v0.2.3] - 2023-02-23
+
+Fixed bug where output file wasn't changing extension
+
 ### [v0.2.2] - 2023-02-23
 
 Few small quality of life tweaks