diff --git a/docs/resources/integration_aws_parameter_store.md b/docs/resources/integration_aws_parameter_store.md
index 41d31ad..7f8e1de 100644
--- a/docs/resources/integration_aws_parameter_store.md
+++ b/docs/resources/integration_aws_parameter_store.md
@@ -77,6 +77,8 @@ resource "doppler_secrets_sync_aws_parameter_store" "backend_prod" {
   path          = "/backend/"
   secure_string = true
   tags          = { myTag = "enabled" }
+
+  delete_behavior = "leave_in_target"
 }
 ```
 
diff --git a/docs/resources/integration_aws_secrets_manager.md b/docs/resources/integration_aws_secrets_manager.md
index ddb715d..603be4b 100644
--- a/docs/resources/integration_aws_secrets_manager.md
+++ b/docs/resources/integration_aws_secrets_manager.md
@@ -72,6 +72,8 @@ resource "doppler_secrets_sync_aws_secrets_manager" "backend_prod" {
   region = "us-east-1"
   path   = "/backend/"
   tags   = { myTag = "enabled" }
+
+  delete_behavior = "leave_in_target"
 }
 ```
 
diff --git a/docs/resources/integration_flyio.md b/docs/resources/integration_flyio.md
new file mode 100644
index 0000000..3da9715
--- /dev/null
+++ b/docs/resources/integration_flyio.md
@@ -0,0 +1,42 @@
+---
+page_title: "doppler_integration_flyio Resource - terraform-provider-doppler"
+subcategory: ""
+description: |-
+	Manage a Fly.io Doppler integration.
+---
+
+# doppler_integration_flyio (Resource)
+
+Manage a Fly.io Doppler integration.
+
+## Example Usage
+
+```terraform
+resource "doppler_integration_flyio" "prod" {
+  name    = "TF Fly.io"
+  api_key = "fo1_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+}
+
+resource "doppler_secrets_sync_flyio" "backend_prod" {
+  integration = doppler_integration_flyio.prod.id
+  project     = "backend"
+  config      = "prd"
+
+  app_id           = "my-app"
+  restart_machines = true
+
+  delete_behavior = "leave_in_target"
+}
+```
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- `api_key` (String, Sensitive) A Fly.io API key.
+- `name` (String) The name of the integration
+
+### Read-Only
+
+- `id` (String) The ID of this resource.
diff --git a/docs/resources/integration_terraform_cloud.md b/docs/resources/integration_terraform_cloud.md
index 49038fa..4bc871a 100644
--- a/docs/resources/integration_terraform_cloud.md
+++ b/docs/resources/integration_terraform_cloud.md
@@ -31,6 +31,8 @@ resource "doppler_secrets_sync_terraform_cloud" "backend_prod" {
   workspace_id       = data.tfe_workspace.prod.id
   variable_sync_type = "terraform"
   name_transform     = "lowercase"
+
+  delete_behavior = "leave_in_target"
 }
 ```
 
diff --git a/docs/resources/secrets_sync_aws_parameter_store.md b/docs/resources/secrets_sync_aws_parameter_store.md
index 988a62d..d95c67b 100644
--- a/docs/resources/secrets_sync_aws_parameter_store.md
+++ b/docs/resources/secrets_sync_aws_parameter_store.md
@@ -77,6 +77,8 @@ resource "doppler_secrets_sync_aws_parameter_store" "backend_prod" {
   path          = "/backend/"
   secure_string = true
   tags          = { myTag = "enabled" }
+
+  delete_behavior = "leave_in_target"
 }
 ```
 
@@ -93,6 +95,7 @@ resource "doppler_secrets_sync_aws_parameter_store" "backend_prod" {
 
 ### Optional
 
+- `delete_behavior` (String) The behavior to be performed on the secrets in the sync target when this resource is deleted or recreated. Either `leave_in_target` (default) or `delete_from_target`.
 - `secure_string` (Boolean) Whether or not the parameters are stored as a secure string
 - `tags` (Map of String) AWS tags to attach to the parameters
 
diff --git a/docs/resources/secrets_sync_aws_secrets_manager.md b/docs/resources/secrets_sync_aws_secrets_manager.md
index 8afd657..893d4be 100644
--- a/docs/resources/secrets_sync_aws_secrets_manager.md
+++ b/docs/resources/secrets_sync_aws_secrets_manager.md
@@ -72,6 +72,8 @@ resource "doppler_secrets_sync_aws_secrets_manager" "backend_prod" {
   region = "us-east-1"
   path   = "/backend/"
   tags   = { myTag = "enabled" }
+
+  delete_behavior = "leave_in_target"
 }
 ```
 
@@ -88,6 +90,7 @@ resource "doppler_secrets_sync_aws_secrets_manager" "backend_prod" {
 
 ### Optional
 
+- `delete_behavior` (String) The behavior to be performed on the secrets in the sync target when this resource is deleted or recreated. Either `leave_in_target` (default) or `delete_from_target`.
 - `tags` (Map of String) AWS tags to attach to the secrets
 
 ### Read-Only
diff --git a/docs/resources/secrets_sync_flyio.md b/docs/resources/secrets_sync_flyio.md
new file mode 100644
index 0000000..aff5380
--- /dev/null
+++ b/docs/resources/secrets_sync_flyio.md
@@ -0,0 +1,49 @@
+---
+page_title: "doppler_secrets_sync_flyio Resource - terraform-provider-doppler"
+subcategory: ""
+description: |-
+	Manage a Fly.io Doppler sync.
+---
+
+# doppler_secrets_sync_flyio (Resource)
+
+Manage a Fly.io Doppler sync.
+
+## Example Usage
+
+```terraform
+resource "doppler_integration_flyio" "prod" {
+  name    = "TF Fly.io"
+  api_key = "fo1_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+}
+
+resource "doppler_secrets_sync_flyio" "backend_prod" {
+  integration = doppler_integration_flyio.prod.id
+  project     = "backend"
+  config      = "prd"
+
+  app_id           = "my-app"
+  restart_machines = true
+
+  delete_behavior = "leave_in_target"
+}
+```
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- `app_id` (String) The app ID
+- `config` (String) The name of the Doppler config
+- `integration` (String) The slug of the integration to use for this sync
+- `project` (String) The name of the Doppler project
+- `restart_machines` (Boolean) Whether or not to restart the Fly.io machines when secrets are updated
+
+### Optional
+
+- `delete_behavior` (String) The behavior to be performed on the secrets in the sync target when this resource is deleted or recreated. Either `leave_in_target` (default) or `delete_from_target`.
+
+### Read-Only
+
+- `id` (String) The ID of this resource.
diff --git a/docs/resources/secrets_sync_github_actions.md b/docs/resources/secrets_sync_github_actions.md
index 4459e5d..9f4c686 100644
--- a/docs/resources/secrets_sync_github_actions.md
+++ b/docs/resources/secrets_sync_github_actions.md
@@ -56,6 +56,7 @@ resource "doppler_secrets_sync_github_actions" "backend_prod" {
 
 ### Optional
 
+- `delete_behavior` (String) The behavior to be performed on the secrets in the sync target when this resource is deleted or recreated. Either `leave_in_target` (default) or `delete_from_target`.
 - `environment_name` (String) The GitHub repo environment name to sync to (only used when `sync_target` is set to "repo")
 - `org_scope` (String) Either "all" or "private", based on the which repos you want to have access (only used when `sync_target` is set to "org")
 - `repo_name` (String) The GitHub repo name to sync to (only used when `sync_target` is set to "repo")
diff --git a/docs/resources/secrets_sync_terraform_cloud.md b/docs/resources/secrets_sync_terraform_cloud.md
index 3ac568e..87806c7 100644
--- a/docs/resources/secrets_sync_terraform_cloud.md
+++ b/docs/resources/secrets_sync_terraform_cloud.md
@@ -31,6 +31,8 @@ resource "doppler_secrets_sync_terraform_cloud" "backend_prod" {
   workspace_id       = data.tfe_workspace.prod.id
   variable_sync_type = "terraform"
   name_transform     = "lowercase"
+
+  delete_behavior = "leave_in_target"
 }
 ```
 
@@ -48,6 +50,7 @@ resource "doppler_secrets_sync_terraform_cloud" "backend_prod" {
 
 ### Optional
 
+- `delete_behavior` (String) The behavior to be performed on the secrets in the sync target when this resource is deleted or recreated. Either `leave_in_target` (default) or `delete_from_target`.
 - `variable_set_id` (String) The Terraform Cloud variable set ID to sync to
 - `workspace_id` (String) The Terraform Cloud workspace ID to sync to
 
diff --git a/examples/resources/integration_aws_parameter_store.tf b/examples/resources/integration_aws_parameter_store.tf
index 3c1719d..e29d91f 100644
--- a/examples/resources/integration_aws_parameter_store.tf
+++ b/examples/resources/integration_aws_parameter_store.tf
@@ -63,5 +63,7 @@ resource "doppler_secrets_sync_aws_parameter_store" "backend_prod" {
   path          = "/backend/"
   secure_string = true
   tags          = { myTag = "enabled" }
+
+  delete_behavior = "leave_in_target"
 }
 
diff --git a/examples/resources/integration_aws_secrets_manager.tf b/examples/resources/integration_aws_secrets_manager.tf
index f05badf..aa50d32 100644
--- a/examples/resources/integration_aws_secrets_manager.tf
+++ b/examples/resources/integration_aws_secrets_manager.tf
@@ -58,5 +58,7 @@ resource "doppler_secrets_sync_aws_secrets_manager" "backend_prod" {
   region = "us-east-1"
   path   = "/backend/"
   tags   = { myTag = "enabled" }
+
+  delete_behavior = "leave_in_target"
 }
 
diff --git a/examples/resources/integration_flyio.tf b/examples/resources/integration_flyio.tf
new file mode 100644
index 0000000..e0a813d
--- /dev/null
+++ b/examples/resources/integration_flyio.tf
@@ -0,0 +1,15 @@
+resource "doppler_integration_flyio" "prod" {
+  name    = "TF Fly.io"
+  api_key = "fo1_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+}
+
+resource "doppler_secrets_sync_flyio" "backend_prod" {
+  integration = doppler_integration_flyio.prod.id
+  project     = "backend"
+  config      = "prd"
+
+  app_id           = "my-app"
+  restart_machines = true
+
+  delete_behavior = "leave_in_target"
+}
diff --git a/examples/resources/integration_terraform_cloud.tf b/examples/resources/integration_terraform_cloud.tf
index 35fefec..d79d59a 100644
--- a/examples/resources/integration_terraform_cloud.tf
+++ b/examples/resources/integration_terraform_cloud.tf
@@ -17,4 +17,6 @@ resource "doppler_secrets_sync_terraform_cloud" "backend_prod" {
   workspace_id       = data.tfe_workspace.prod.id
   variable_sync_type = "terraform"
   name_transform     = "lowercase"
+
+  delete_behavior = "leave_in_target"
 }
diff --git a/templates/resources/integration_flyio.md.tmpl b/templates/resources/integration_flyio.md.tmpl
new file mode 100644
index 0000000..d1eac1b
--- /dev/null
+++ b/templates/resources/integration_flyio.md.tmpl
@@ -0,0 +1,16 @@
+---
+page_title: "doppler_integration_flyio Resource - terraform-provider-doppler"
+subcategory: ""
+description: |-
+	Manage a Fly.io Doppler integration.
+---
+
+# doppler_integration_flyio (Resource)
+
+Manage a Fly.io Doppler integration.
+
+## Example Usage
+
+{{tffile "examples/resources/integration_flyio.tf"}}
+
+{{ .SchemaMarkdown | trimspace }}
diff --git a/templates/resources/secrets_sync_flyio.md.tmpl b/templates/resources/secrets_sync_flyio.md.tmpl
new file mode 100644
index 0000000..f084dba
--- /dev/null
+++ b/templates/resources/secrets_sync_flyio.md.tmpl
@@ -0,0 +1,16 @@
+---
+page_title: "doppler_secrets_sync_flyio Resource - terraform-provider-doppler"
+subcategory: ""
+description: |-
+	Manage a Fly.io Doppler sync.
+---
+
+# doppler_secrets_sync_flyio (Resource)
+
+Manage a Fly.io Doppler sync.
+
+## Example Usage
+
+{{tffile "examples/resources/integration_flyio.tf"}}
+
+{{ .SchemaMarkdown | trimspace }}