diff --git a/aws.pkr.hcl b/aws.pkr.hcl
index 33e40c4..37bdef0 100644
--- a/aws.pkr.hcl
+++ b/aws.pkr.hcl
@@ -159,4 +159,8 @@ build {
     tag_value = "Spacelift AMI"
     keep_releases = 180
   }
+
+  post-processor "manifest" {
+    output = "manifest.json"
+  }
 }
diff --git a/azure.pkr.hcl b/azure.pkr.hcl
index 4ba831f..9c7e339 100644
--- a/azure.pkr.hcl
+++ b/azure.pkr.hcl
@@ -150,4 +150,8 @@ build {
     ]
     inline_shebang = "/bin/sh -x"
   }
+
+  post-processor "manifest" {
+    output = "manifest.json"
+  }
 }
diff --git a/gcp.pkr.hcl b/gcp.pkr.hcl
index 4ee4778..9f13e1a 100644
--- a/gcp.pkr.hcl
+++ b/gcp.pkr.hcl
@@ -80,4 +80,8 @@ build {
       "shared/scripts/apt-install-jq.sh",
     ]
   }
+
+  post-processor "manifest" {
+    output = "manifest.json"
+  }
 }