diff --git a/internal/config/load.go b/internal/config/load.go
index 4d7ea133b3034c46cc4e9b4097e372b7f18aa7a9..25139cb5f4b2ba8013525bfde025f04cb267d1b8 100644
--- a/internal/config/load.go
+++ b/internal/config/load.go
@@ -177,6 +177,14 @@ func (c *Config) configureProviders(env env.Env, resolver VariableResolver, know
 		if len(config.ExtraHeaders) > 0 {
 			maps.Copy(headers, config.ExtraHeaders)
 		}
+		for k, v := range headers {
+			resolved, err := resolver.ResolveValue(v)
+			if err != nil {
+				slog.Error("Could not resolve provider header", "err", err.Error())
+				continue
+			}
+			headers[k] = resolved
+		}
 		prepared := ProviderConfig{
 			ID:                 string(p.ID),
 			Name:               p.Name,
@@ -307,6 +315,15 @@ func (c *Config) configureProviders(env env.Env, resolver VariableResolver, know
 			continue
 		}
 
+		for k, v := range providerConfig.ExtraHeaders {
+			resolved, err := resolver.ResolveValue(v)
+			if err != nil {
+				slog.Error("Could not resolve provider header", "err", err.Error())
+				continue
+			}
+			providerConfig.ExtraHeaders[k] = resolved
+		}
+
 		c.Providers.Set(id, providerConfig)
 	}
 	return nil