diff --git a/CHANGES.md b/CHANGES.md
index 72957cf..8411716 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,6 @@
+## 1.5.2
+* Lower TargetFramework to 1.4 to support .NET Core 1.x.
+
 ## 1.5.1
 * Make Tinify.CompressionCount nullable, it is unset if no calls to the
   server have been made or if the server does not return a count.
diff --git a/src/Tinify/Tinify.csproj b/src/Tinify/Tinify.csproj
index 7ab64ed..5af961b 100755
--- a/src/Tinify/Tinify.csproj
+++ b/src/Tinify/Tinify.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <Description>.NET client for the Tinify API. Tinify compresses your images intelligently. Read more at https://tinify.com.</Description>
     <AssemblyTitle>Tinify</AssemblyTitle>
-    <VersionPrefix>1.5.1</VersionPrefix>
+    <VersionPrefix>1.5.2</VersionPrefix>
     <Authors>Tinify</Authors>
     <TargetFramework>netstandard1.4</TargetFramework>
     <AssemblyName>Tinify</AssemblyName>