diff --git a/CHANGELOG.md b/CHANGELOG.md
index 028f01b..0d5e7a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## Unreleased
 
+## 0.3.5 - 2022-01-19
+### Added
+* Added space for contact information to user agent
+
 ## 0.3.4 - 2022-01-19
 ### Added
 * Support for `ETag` and `Last-Modified` headers in feed responses
diff --git a/walrss/internal/rss/processor.go b/walrss/internal/rss/processor.go
index 2a86546..2518c5e 100644
--- a/walrss/internal/rss/processor.go
+++ b/walrss/internal/rss/processor.go
@@ -42,7 +42,7 @@ func getUserAgent(st *state.State) string {
 		} else if core.Version != "" {
 			o += "/" + core.Version
 		}
-		o += " (https://github.com/codemicro/walrss)"
+		o += " (" + st.Config.Platform.ContactInformation + ", https://github.com/codemicro/walrss)"
 		ua.ua = o
 	})
 	return ua.ua
diff --git a/walrss/internal/state/state.go b/walrss/internal/state/state.go
index 227f49e..a0d8183 100644
--- a/walrss/internal/state/state.go
+++ b/walrss/internal/state/state.go
@@ -34,8 +34,9 @@ type Config struct {
 		ExternalURL string `fig:"externalURL" validate:"required"`
 	}
 	Platform struct {
-		DisableRegistration  bool `fig:"disableRegistration"`
-		DisableSecureCookies bool `fig:"disableSecureCookies"`
+		DisableRegistration  bool   `fig:"disableRegistration"`
+		DisableSecureCookies bool   `fig:"disableSecureCookies"`
+		ContactInformation   string `fig:"contactInformation" validate:"required"`
 	}
 	OIDC struct {
 		Enable       bool   `fig:"enable"`