diff --git a/api/tangled/cbor_gen.go b/api/tangled/cbor_gen.go
--- a/api/tangled/cbor_gen.go
+++ b/api/tangled/cbor_gen.go
@@ -5898,13 +5898,9 @@ return err
 	}
 
 	cw := cbg.NewCborWriter(w)
-	fieldCount := 6
-
-	if t.Owner == nil {
-		fieldCount--
-	}
+	fieldCount := 5
 
-	if t.Repo == nil {
+	if t.ReplyTo == nil {
 		fieldCount--
 	}
 
@@ -5935,38 +5931,6 @@ if _, err := cw.WriteString(string(t.Body)); err != nil {
 		return err
 	}
 
-	// t.Repo (string) (string)
-	if t.Repo != nil {
-
-		if len("repo") > 1000000 {
-			return xerrors.Errorf("Value in field \"repo\" was too long")
-		}
-
-		if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("repo"))); err != nil {
-			return err
-		}
-		if _, err := cw.WriteString(string("repo")); err != nil {
-			return err
-		}
-
-		if t.Repo == nil {
-			if _, err := cw.Write(cbg.CborNull); err != nil {
-				return err
-			}
-		} else {
-			if len(*t.Repo) > 1000000 {
-				return xerrors.Errorf("Value in field t.Repo was too long")
-			}
-
-			if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(*t.Repo))); err != nil {
-				return err
-			}
-			if _, err := cw.WriteString(string(*t.Repo)); err != nil {
-				return err
-			}
-		}
-	}
-
 	// t.LexiconTypeID (string) (string)
 	if len("$type") > 1000000 {
 		return xerrors.Errorf("Value in field \"$type\" was too long")
@@ -6009,33 +5973,33 @@ if _, err := cw.WriteString(string(t.Issue)); err != nil {
 		return err
 	}
 
-	// t.Owner (string) (string)
-	if t.Owner != nil {
+	// t.ReplyTo (string) (string)
+	if t.ReplyTo != nil {
 
-		if len("owner") > 1000000 {
-			return xerrors.Errorf("Value in field \"owner\" was too long")
+		if len("replyTo") > 1000000 {
+			return xerrors.Errorf("Value in field \"replyTo\" was too long")
 		}
 
-		if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("owner"))); err != nil {
+		if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len("replyTo"))); err != nil {
 			return err
 		}
-		if _, err := cw.WriteString(string("owner")); err != nil {
+		if _, err := cw.WriteString(string("replyTo")); err != nil {
 			return err
 		}
 
-		if t.Owner == nil {
+		if t.ReplyTo == nil {
 			if _, err := cw.Write(cbg.CborNull); err != nil {
 				return err
 			}
 		} else {
-			if len(*t.Owner) > 1000000 {
-				return xerrors.Errorf("Value in field t.Owner was too long")
+			if len(*t.ReplyTo) > 1000000 {
+				return xerrors.Errorf("Value in field t.ReplyTo was too long")
 			}
 
-			if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(*t.Owner))); err != nil {
+			if err := cw.WriteMajorTypeHeader(cbg.MajTextString, uint64(len(*t.ReplyTo))); err != nil {
 				return err
 			}
-			if _, err := cw.WriteString(string(*t.Owner)); err != nil {
+			if _, err := cw.WriteString(string(*t.ReplyTo)); err != nil {
 				return err
 			}
 		}
@@ -6118,27 +6082,6 @@ }
 
 				t.Body = string(sval)
 			}
-			// t.Repo (string) (string)
-		case "repo":
-
-			{
-				b, err := cr.ReadByte()
-				if err != nil {
-					return err
-				}
-				if b != cbg.CborNull[0] {
-					if err := cr.UnreadByte(); err != nil {
-						return err
-					}
-
-					sval, err := cbg.ReadStringWithMax(cr, 1000000)
-					if err != nil {
-						return err
-					}
-
-					t.Repo = (*string)(&sval)
-				}
-			}
 			// t.LexiconTypeID (string) (string)
 		case "$type":
 
@@ -6161,8 +6104,8 @@ }
 
 				t.Issue = string(sval)
 			}
-			// t.Owner (string) (string)
-		case "owner":
+			// t.ReplyTo (string) (string)
+		case "replyTo":
 
 			{
 				b, err := cr.ReadByte()
@@ -6179,7 +6122,7 @@ if err != nil {
 						return err
 					}
 
-					t.Owner = (*string)(&sval)
+					t.ReplyTo = (*string)(&sval)
 				}
 			}
 			// t.CreatedAt (string) (string)
diff --git a/api/tangled/issuecomment.go b/api/tangled/issuecomment.go
--- a/api/tangled/issuecomment.go
+++ b/api/tangled/issuecomment.go
@@ -21,6 +21,5 @@ LexiconTypeID string  `json:"$type,const=sh.tangled.repo.issue.comment" cborgen:"$type,const=sh.tangled.repo.issue.comment"`
 	Body          string  `json:"body" cborgen:"body"`
 	CreatedAt     string  `json:"createdAt" cborgen:"createdAt"`
 	Issue         string  `json:"issue" cborgen:"issue"`
-	Owner         *string `json:"owner,omitempty" cborgen:"owner,omitempty"`
-	Repo          *string `json:"repo,omitempty" cborgen:"repo,omitempty"`
+	ReplyTo       *string `json:"replyTo,omitempty" cborgen:"replyTo,omitempty"`
 }
diff --git a/lexicons/issue/comment.json b/lexicons/issue/comment.json
--- a/lexicons/issue/comment.json
+++ b/lexicons/issue/comment.json
@@ -9,26 +9,26 @@ "type": "record",
       "key": "tid",
       "record": {
         "type": "object",
-        "required": ["issue", "body", "createdAt"],
+        "required": [
+          "issue",
+          "body",
+          "createdAt"
+        ],
         "properties": {
           "issue": {
             "type": "string",
             "format": "at-uri"
           },
-          "repo": {
-            "type": "string",
-            "format": "at-uri"
-          },
-          "owner": {
-            "type": "string",
-            "format": "did"
-          },
           "body": {
             "type": "string"
           },
           "createdAt": {
             "type": "string",
             "format": "datetime"
+          },
+          "replyTo": {
+            "type": "string",
+            "format": "at-uri"
           }
         }
       }