diff --git a/BREAKING-CHANGES.md b/BREAKING-CHANGES.md
index 5e0592596..43115f2b1 100644
--- a/BREAKING-CHANGES.md
+++ b/BREAKING-CHANGES.md
@@ -15,7 +15,7 @@ read first.
 
 ---
 
-## Unreleased — since 1.4.0
+## 2.0.0 (unreleased) — since 1.4.0
 
 ### At a glance
 
diff --git a/Sources/AngouriMath/AngouriMath.csproj b/Sources/AngouriMath/AngouriMath.csproj
index 7b2d7e46e..d19e5b3cd 100644
--- a/Sources/AngouriMath/AngouriMath.csproj
+++ b/Sources/AngouriMath/AngouriMath.csproj
@@ -10,8 +10,6 @@
   <PropertyGroup>
     <OutputType>Library</OutputType>
     <LangVersion>preview</LangVersion>
-    <AssemblyVersion>0.1.3.0</AssemblyVersion>
-    <FileVersion>0.1.3.0</FileVersion>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PackageTags>$(PackageTags), csharp</PackageTags>
     <Description>Enables to work with formulas built in the code or from a string. Computing, derivating, latex rendering, compilation, solving equations and systems of equations analytycally, simplification, and much more. Read more on https://am.angouri.org.</Description>
diff --git a/Sources/Package.Build.props b/Sources/Package.Build.props
index d3c2d9b34..0f74b3085 100644
--- a/Sources/Package.Build.props
+++ b/Sources/Package.Build.props
@@ -12,7 +12,22 @@
   -->
   
   <PropertyGroup>
-    <Version>1.4.0-preview.4</Version>
+    <!--
+    The version under development. The NuGet workflow overrides PackageVersion from the
+    release tag, so what ships is named by the tag; this is what a local build and the
+    assembly metadata carry.
+    -->
+    <Version>2.0.0-preview.1</Version>
+
+    <!--
+    Pinned to the major for the whole of 2.x, and deliberately not tracking Version.
+    The assembly is strong-named (see AngouriMath.csproj), and for a signed assembly
+    every AssemblyVersion change breaks binding on consumers that do not add a redirect.
+    Holding it at 2.0.0.0 makes every 2.x release a drop-in replacement. FileVersion
+    carries the release for anyone reading the file properties.
+    -->
+    <AssemblyVersion>2.0.0.0</AssemblyVersion>
+    <FileVersion>2.0.0.0</FileVersion>
 
     <Authors>WhiteBlackGoose and contributors</Authors>
     <Company>Angouri</Company>