diff --git a/proto/common/v1.proto b/proto/common/v1.proto
index 1e3b62c..ac54704 100644
--- a/proto/common/v1.proto
+++ b/proto/common/v1.proto
@@ -16,6 +16,7 @@ message Common_1 {
   google.protobuf.Timestamp updatedAt = 4 [(required) = true];
   // 32-byte hash of the discovery key of a core
   bytes createdBy = 5 [(required) = true];
+  bool deleted = 6 [(required) = true];
 }
 /* ignored fields and differences from common.json jsonSchema
  * id is a byte buffer here and a string in jsonSchema
diff --git a/schema/common/v1.json b/schema/common/v1.json
index de9c91a..0f439b4 100644
--- a/schema/common/v1.json
+++ b/schema/common/v1.json
@@ -38,6 +38,10 @@
       "items": {
         "type": "string"
       }
+    },
+    "deleted": {
+      "description": "Indicates whether the document has been deleted",
+      "type": "boolean"
     }
   },
   "required": [
@@ -47,6 +51,7 @@
     "updatedAt",
     "links",
     "versionId",
-    "createdBy"
+    "createdBy",
+    "deleted"
   ]
 }
diff --git a/src/lib/decode-conversions.ts b/src/lib/decode-conversions.ts
index 1ac5732..d4187a3 100644
--- a/src/lib/decode-conversions.ts
+++ b/src/lib/decode-conversions.ts
@@ -56,7 +56,12 @@ export const convertObservation: ConvertFunction<'observation'> = (
     ...rest,
     refs: message.refs?.map(({ id }) => ({ id: id.toString('hex') })),
     attachments: message.attachments?.map(({ driveId, name, type, hash }) => {
-      return { driveId: driveId.toString('hex'), name, type, hash: hash.toString('hex') }
+      return {
+        driveId: driveId.toString('hex'),
+        name,
+        type,
+        hash: hash.toString('hex'),
+      }
     }),
     tags: convertTags(message.tags),
     metadata: message.metadata || {},
@@ -251,5 +256,6 @@ function convertCommon(
     createdAt: common.createdAt,
     updatedAt: common.updatedAt,
     createdBy: common.createdBy.toString('hex'),
+    deleted: common.deleted,
   }
 }
diff --git a/src/lib/encode-conversions.ts b/src/lib/encode-conversions.ts
index 4df1ae9..9c58b41 100644
--- a/src/lib/encode-conversions.ts
+++ b/src/lib/encode-conversions.ts
@@ -141,6 +141,7 @@ function convertCommon(
     updatedAt: common.updatedAt,
     createdBy: Buffer.from(common.createdBy, 'hex'),
     links: common.links.map((link) => parseVersionId(link)),
+    deleted: common.deleted,
   }
 }
 
diff --git a/test/fixtures/bad-docs.js b/test/fixtures/bad-docs.js
index 72b7db3..018af7c 100644
--- a/test/fixtures/bad-docs.js
+++ b/test/fixtures/bad-docs.js
@@ -16,11 +16,13 @@ export const badDocs = [
       schemaName: 'observOtion',
       createdAt: cachedValues.createdAt,
       updatedAt: cachedValues.updatedAt,
+      createdBy: cachedValues.createdBy,
       links: [],
       refs: [],
       attachments: [],
       tags: {},
       metadata: {},
+      deleted: false,
     },
   },
   {
@@ -32,9 +34,11 @@ export const badDocs = [
       schemaName: 'role',
       createdAt: cachedValues.createdAt,
       updatedAt: cachedValues.updatedAt,
+      createdBy: cachedValues.createdBy,
       links: [],
       roleId: '',
       fromIndex: 4,
+      deleted: false,
     },
   },
 ]
diff --git a/test/fixtures/good-docs-completed.js b/test/fixtures/good-docs-completed.js
index 3b00265..1af6fa5 100644
--- a/test/fixtures/good-docs-completed.js
+++ b/test/fixtures/good-docs-completed.js
@@ -66,6 +66,7 @@ export const goodDocsCompleted = [
           networkAvailable: false,
         },
       },
+      deleted: false,
     },
     expected: {},
   },
@@ -86,6 +87,7 @@ export const goodDocsCompleted = [
         relation: cachedValues.defaultPresets.point,
       },
       name: 'myProject',
+      deleted: false,
     },
     expected: {},
   },
@@ -110,6 +112,7 @@ export const goodDocsCompleted = [
           value: 'somePrimitiveTagValue',
         },
       ],
+      deleted: false,
     },
     expected: {},
   },
@@ -137,6 +140,7 @@ export const goodDocsCompleted = [
       fieldIds: cachedValues.fieldIds,
       iconId: cachedValues.iconId,
       terms: ['imastring'],
+      deleted: false,
     },
     expected: {},
   },
@@ -151,6 +155,7 @@ export const goodDocsCompleted = [
       links: [],
       roleId: '6fd029a78243',
       fromIndex: 5,
+      deleted: false,
     },
     expected: {},
   },
@@ -164,6 +169,7 @@ export const goodDocsCompleted = [
       createdBy: cachedValues.createdBy,
       links: [],
       name: 'my device name',
+      deleted: true,
     },
     expected: {},
   },
@@ -189,6 +195,7 @@ export const goodDocsCompleted = [
         blobIndex: Buffer.from('blobIndex'),
       },
       identitySignature: Buffer.from('identity'),
+      deleted: true,
     },
     expected: {},
   },
diff --git a/test/fixtures/good-docs-minimal.js b/test/fixtures/good-docs-minimal.js
index 1ea78da..2a968b5 100644
--- a/test/fixtures/good-docs-minimal.js
+++ b/test/fixtures/good-docs-minimal.js
@@ -24,6 +24,7 @@ export const goodDocsMinimal = [
       attachments: [],
       tags: {},
       metadata: {},
+      deleted: false,
     },
     expected: {},
   },
@@ -36,6 +37,7 @@ export const goodDocsMinimal = [
       updatedAt: cachedValues.updatedAt,
       createdBy: cachedValues.createdBy,
       links: [],
+      deleted: false,
     },
     expected: {},
   },
@@ -51,6 +53,7 @@ export const goodDocsMinimal = [
       tagKey: 'myTagKey',
       label: 'my label',
       type: 'text',
+      deleted: false,
     },
     expected: {},
   },
@@ -70,6 +73,7 @@ export const goodDocsMinimal = [
       removeTags: {},
       fieldIds: [],
       terms: [],
+      deleted: false,
     },
     expected: {},
   },
@@ -84,6 +88,7 @@ export const goodDocsMinimal = [
       links: [],
       roleId: '3b0104e370f9',
       fromIndex: 5,
+      deleted: false,
     },
     expected: {},
   },
@@ -97,6 +102,7 @@ export const goodDocsMinimal = [
       createdBy: cachedValues.createdBy,
       links: [],
       name: 'my device name',
+      deleted: false,
     },
     expected: {},
   },
@@ -122,6 +128,7 @@ export const goodDocsMinimal = [
         blobIndex: Buffer.from('blobIndex'),
       },
       identitySignature: Buffer.from('identity'),
+      deleted: true,
     },
     expected: {},
   },