diff --git a/packages/google-privacy-dlp/protos/google/privacy/dlp/v2/dlp.proto b/packages/google-privacy-dlp/protos/google/privacy/dlp/v2/dlp.proto
index 4dc3a3862d0..7e243ddd005 100644
--- a/packages/google-privacy-dlp/protos/google/privacy/dlp/v2/dlp.proto
+++ b/packages/google-privacy-dlp/protos/google/privacy/dlp/v2/dlp.proto
@@ -5292,9 +5292,8 @@ message InfoTypeSummary {
   // The infoType.
   InfoType info_type = 1;
 
-  // Approximate percentage of non-null rows that contained data detected by
-  // this infotype.
-  int32 estimated_prevalence = 2;
+  // Not populated for predicted infotypes.
+  int32 estimated_prevalence = 2 [deprecated = true];
 }
 
 // Infotype details for other infoTypes found within a column.
diff --git a/packages/google-privacy-dlp/protos/protos.json b/packages/google-privacy-dlp/protos/protos.json
index 67a6eb7aaca..b891e02fda8 100644
--- a/packages/google-privacy-dlp/protos/protos.json
+++ b/packages/google-privacy-dlp/protos/protos.json
@@ -5146,7 +5146,10 @@
                         },
                         "estimatedPrevalence": {
                           "type": "int32",
-                          "id": 2
+                          "id": 2,
+                          "options": {
+                            "deprecated": true
+                          }
                         }
                       }
                     },