diff --git a/net/server/internal/api_getArticles.go b/net/server/internal/api_getArticles.go
index 4343d034..9b04ad10 100644
--- a/net/server/internal/api_getArticles.go
+++ b/net/server/internal/api_getArticles.go
@@ -48,6 +48,8 @@ func GetArticles(w http.ResponseWriter, r *http.Request) {
     for _, article := range articles {
       response = append(response, getArticleModel(&article, false, true))
     }
+
+    w.Header().Set("Content-Revision", strconv.FormatInt(account.ContentRevision, 10))
   } else if tokenType == APP_TOKENCONTACT {
 
     card, code, err := BearerContactToken(r, false)
@@ -60,8 +62,6 @@ func GetArticles(w http.ResponseWriter, r *http.Request) {
       if revisionSet {
         ErrResponse(w, http.StatusGone, errors.New("article view unavailable"))
         return
-      } else {
-        w.Header().Set("View-Revision", strconv.FormatInt(card.ViewRevision + card.Account.ViewRevision, 10))
       }
     }
 
@@ -78,6 +78,9 @@ func GetArticles(w http.ResponseWriter, r *http.Request) {
         response = append(response, getArticleModel(&article, true, false))
       }
     }
+
+    w.Header().Set("View-Revision", strconv.FormatInt(card.ViewRevision + card.Account.ViewRevision, 10))
+    w.Header().Set("Content-Revision", strconv.FormatInt(card.Account.ContentRevision, 10))
   } else {
     ErrResponse(w, http.StatusBadRequest, errors.New("invalid token type"))
   }
diff --git a/net/server/internal/api_getCards.go b/net/server/internal/api_getCards.go
index f3cce601..3d55f78d 100644
--- a/net/server/internal/api_getCards.go
+++ b/net/server/internal/api_getCards.go
@@ -34,5 +34,7 @@ func GetCards(w http.ResponseWriter, r *http.Request) {
   for _, slot := range slots {
     response = append(response, getCardModel(&slot))
   }
+
+  w.Header().Set("Card-Revision", strconv.FormatInt(account.CardRevision, 10))
   WriteResponse(w, response)
 }
diff --git a/net/server/internal/api_getGroups.go b/net/server/internal/api_getGroups.go
index 2c740a12..0814b373 100644
--- a/net/server/internal/api_getGroups.go
+++ b/net/server/internal/api_getGroups.go
@@ -34,6 +34,8 @@ func GetGroups(w http.ResponseWriter, r *http.Request) {
   for _, slot := range slots {
     groups = append(groups, getGroupModel(&slot))
   }
+
+  w.Header().Set("Group-Revision", strconv.FormatInt(account.GroupRevision, 10))
   WriteResponse(w, groups)
 }
 
diff --git a/net/server/internal/ucAddContact_test.go b/net/server/internal/ucUpdateContact_test.go
similarity index 98%
rename from net/server/internal/ucAddContact_test.go
rename to net/server/internal/ucUpdateContact_test.go
index 8c085764..1b61d309 100644
--- a/net/server/internal/ucAddContact_test.go
+++ b/net/server/internal/ucUpdateContact_test.go
@@ -6,7 +6,7 @@ import (
   "github.com/stretchr/testify/assert"
 )
 
-func TestAddContact(t *testing.T) {
+func TestUpdateContact(t *testing.T) {
   var err error
   var set *TestGroup
   var rev *Revision