diff --git a/build/dependencies.props b/build/dependencies.props
index 3a4a6623a9..e0107a3216 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -100,6 +100,7 @@
     <MoqPackageVersion>4.7.49</MoqPackageVersion>
     <NETStandard16PackageVersion>1.6.1</NETStandard16PackageVersion>
     <NETStandardLibrary20PackageVersion>2.0.3</NETStandardLibrary20PackageVersion>
+    <NetTopologySuiteCorePackageVersion>1.15.0</NetTopologySuiteCorePackageVersion>
     <NewtonsoftJsonBsonPackageVersion>1.0.1</NewtonsoftJsonBsonPackageVersion>
     <NewtonsoftJsonPackageVersion>11.0.2</NewtonsoftJsonPackageVersion>
     <NuGetFrameworksPackageVersion>4.7.0</NuGetFrameworksPackageVersion>
diff --git a/build/external-dependencies.props b/build/external-dependencies.props
index 94c9d3a200..aa11f5d309 100644
--- a/build/external-dependencies.props
+++ b/build/external-dependencies.props
@@ -114,6 +114,8 @@
     <!-- netstandard2.0 -->
     <ExternalDependency Include="NETStandard.Library" Version="$(NETStandardLibrary20PackageVersion)" VariableName="NETStandardLibrary20PackageVersion" />
 
+    <ExternalDependency Include="NetTopologySuite.Core" Version="$(NetTopologySuiteCorePackageVersion)" />
+
     <!-- This version should be used by runtime packages -->
     <ExternalDependency Include="Newtonsoft.Json" Version="$(NewtonsoftJsonPackageVersion)" />
     <!-- This version is required by MSBuild tasks or Visual Studio extensions. -->