diff --git a/internal/config/config.go b/internal/config/config.go
index 5c978106bc49f7b5956ea1d1d6e4d994f53eae58..ae8bcfdc35562e680527e99cdc74fd591e849874 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -72,7 +72,7 @@ type ProviderConfig struct {
 	Disable bool `json:"disable,omitempty"`
 
 	// Extra headers to send with each request to the provider.
-	ExtraHeaders map[string]string
+	ExtraHeaders map[string]string `json:"extra_headers,omitempty"`
 
 	// Used to pass extra parameters to the provider.
 	ExtraParams map[string]string `json:"-"`
diff --git a/internal/config/resolve.go b/internal/config/resolve.go
index 9c9116661814fe7abee91e2821829442bc65080d..3c97a6456cf7fe5968311746d62b2772b21d6aaa 100644
--- a/internal/config/resolve.go
+++ b/internal/config/resolve.go
@@ -44,7 +44,7 @@ func (r *shellVariableResolver) ResolveValue(value string) (string, error) {
 
 	if strings.HasPrefix(value, "$(") && strings.HasSuffix(value, ")") {
 		command := strings.TrimSuffix(strings.TrimPrefix(value, "$("), ")")
-		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
 		defer cancel()
 
 		stdout, _, err := r.shell.Exec(ctx, command)