diff --git a/images/win/windows2016.json b/images/win/windows2016.json
index 21bcfff4..8995569e 100644
--- a/images/win/windows2016.json
+++ b/images/win/windows2016.json
@@ -329,6 +329,9 @@
         },
         {
             "type": "powershell",
+            "environment_vars": [
+                "TOOLSET_JSON_PATH={{user `toolset_json_path`}}"
+            ],
             "scripts": [
                 "{{ template_dir }}/scripts/Installers/Install-Pipx.ps1",
                 "{{ template_dir }}/scripts/Installers/Install-PipxPackages.ps1"
diff --git a/images/win/windows2019.json b/images/win/windows2019.json
index 62bf1b94..ced90aad 100644
--- a/images/win/windows2019.json
+++ b/images/win/windows2019.json
@@ -327,6 +327,9 @@
         },
         {
             "type": "powershell",
+            "environment_vars": [
+                "TOOLSET_JSON_PATH={{user `toolset_json_path`}}"
+            ],
             "scripts": [
                 "{{ template_dir }}/scripts/Installers/Install-Pipx.ps1",
                 "{{ template_dir }}/scripts/Installers/Install-PipxPackages.ps1"