diff --git a/specification/_global/search/_types/highlighting.ts b/specification/_global/search/_types/highlighting.ts
index fe50c6e69f..001310b999 100644
--- a/specification/_global/search/_types/highlighting.ts
+++ b/specification/_global/search/_types/highlighting.ts
@@ -17,7 +17,7 @@
  * under the License.
  */
 
-import { Dictionary } from '@spec_utils/Dictionary'
+import { Dictionary, SingleKeyDictionary } from '@spec_utils/Dictionary'
 import { UserDefinedValue } from '@spec_utils/UserDefinedValue'
 import { Field, Fields } from '@_types/common'
 import { integer } from '@_types/Numeric'
@@ -151,7 +151,9 @@ export class HighlightBase {
 
 export class Highlight extends HighlightBase {
   encoder?: HighlighterEncoder
-  fields: Dictionary<Field, HighlightField>
+  fields:
+    | SingleKeyDictionary<Field, HighlightField>
+    | SingleKeyDictionary<Field, HighlightField>[]
 }
 
 export enum HighlighterEncoder {
diff --git a/specification/_types/Errors.ts b/specification/_types/Errors.ts
index 750a305525..6275b4ae27 100644
--- a/specification/_types/Errors.ts
+++ b/specification/_types/Errors.ts
@@ -38,7 +38,7 @@ export class ErrorCause
   /**
    * A human-readable explanation of the error, in English.
    */
-  reason?: string
+  reason?: string | null
   /**
    * The server stack trace. Present only if the `error_trace=true` parameter was sent with the request.
    */
diff --git a/specification/_types/Retriever.ts b/specification/_types/Retriever.ts
index 520640b30a..7c6f16f033 100644
--- a/specification/_types/Retriever.ts
+++ b/specification/_types/Retriever.ts
@@ -18,6 +18,7 @@
  */
 
 import { FieldCollapse } from '@global/search/_types/FieldCollapse'
+import { Rescore } from '@global/search/_types/rescoring'
 import { UserDefinedValue } from '@spec_utils/UserDefinedValue'
 import { QueryVector, QueryVectorBuilder, RescoreVector } from '@_types/Knn'
 import { float, integer } from '@_types/Numeric'
@@ -39,6 +40,8 @@ export class RetrieverContainer {
   text_similarity_reranker?: TextSimilarityReranker
   /** A retriever that replaces the functionality of a rule query. */
   rule?: RuleRetriever
+  /** A retriever that re-scores only the results produced by its child retriever. */
+  rescorer?: RescorerRetriever
 }
 
 export class RetrieverBase {
@@ -48,6 +51,12 @@ export class RetrieverBase {
   min_score?: float
 }
 
+export class RescorerRetriever extends RetrieverBase {
+  /** Inner retriever. */
+  retriever: RetrieverContainer
+  rescore: Rescore | Rescore[]
+}
+
 export class StandardRetriever extends RetrieverBase {
   /** Defines a query to retrieve a set of top documents. */
   query?: QueryContainer
@@ -105,7 +114,7 @@ export class TextSimilarityReranker extends RetrieverBase {
 
 export class RuleRetriever extends RetrieverBase {
   /** The ruleset IDs containing the rules this retriever is evaluating against. */
-  ruleset_ids: Id[]
+  ruleset_ids: Id | Id[]
   /** The match criteria that will determine if a rule in the provided rulesets should be applied. */
   match_criteria: UserDefinedValue
   /** The retriever whose results rules should be applied to. */
diff --git a/specification/_types/query_dsl/WeightedTokensQuery.ts b/specification/_types/query_dsl/WeightedTokensQuery.ts
index 1dabf656a4..3943d399a9 100644
--- a/specification/_types/query_dsl/WeightedTokensQuery.ts
+++ b/specification/_types/query_dsl/WeightedTokensQuery.ts
@@ -17,7 +17,7 @@
  * under the License.
  */
 
-import { Dictionary } from '@spec_utils/Dictionary'
+import { SingleKeyDictionary } from '@spec_utils/Dictionary'
 import { float } from '@_types/Numeric'
 import { QueryBase } from './abstractions'
 import { TokenPruningConfig } from './TokenPruningConfig'
@@ -27,7 +27,7 @@ import { TokenPruningConfig } from './TokenPruningConfig'
  */
 export class WeightedTokensQuery extends QueryBase {
   /** The tokens representing this query */
-  tokens: Dictionary<string, float>
+  tokens: SingleKeyDictionary<string, float>[]
   /** Token pruning configurations */
   pruning_config?: TokenPruningConfig
 }
diff --git a/specification/_types/query_dsl/fulltext.ts b/specification/_types/query_dsl/fulltext.ts
index a03ff6ed38..061b6b8566 100644
--- a/specification/_types/query_dsl/fulltext.ts
+++ b/specification/_types/query_dsl/fulltext.ts
@@ -103,6 +103,8 @@ export class IntervalsContainer {
    * Matches terms that start with a specified set of characters.
    */
   prefix?: IntervalsPrefix
+  range?: IntervalsRange
+  regexp?: IntervalsRegexp
   /**
    * Matches terms using a wildcard pattern.
    */
@@ -232,6 +234,52 @@ export class IntervalsPrefix {
   use_field?: Field
 }
 
+export class IntervalsRange {
+  /**
+   * Analyzer used to analyze the `prefix`.
+   * @doc_id analysis
+   */
+  analyzer?: string
+  /**
+   * Lower term, either gte or gt must be provided.
+   */
+  gte?: string
+  /**
+   * Lower term, either gte or gt must be provided.
+   */
+  gt?: string
+  /**
+   * Upper term, either lte or lt must be provided.
+   */
+  lte?: string
+  /**
+   * Upper term, either lte or lt must be provided.
+   */
+  lt?: string
+  /**
+   * If specified, match intervals from this field rather than the top-level field.
+   * The `prefix` is normalized using the search analyzer from this field, unless `analyzer` is specified separately.
+   */
+  use_field?: Field
+}
+
+export class IntervalsRegexp {
+  /**
+   * Analyzer used to analyze the `prefix`.
+   * @doc_id analysis
+   */
+  analyzer?: string
+  /**
+   * Regex pattern.
+   */
+  pattern: string
+  /**
+   * If specified, match intervals from this field rather than the top-level field.
+   * The `prefix` is normalized using the search analyzer from this field, unless `analyzer` is specified separately.
+   */
+  use_field?: Field
+}
+
 /**
  * @variants container
  * @ext_doc_id query-dsl-intervals-query
@@ -259,6 +307,9 @@ export class IntervalsQuery extends QueryBase {
    * Matches terms that start with a specified set of characters.
    */
   prefix?: IntervalsPrefix
+  range?: IntervalsRange
+  regexp?: IntervalsRegexp
+
   /**
    * Matches terms using a wildcard pattern.
    */
diff --git a/specification/_types/query_dsl/geo.ts b/specification/_types/query_dsl/geo.ts
index d73e6327e3..01a2fa5f37 100644
--- a/specification/_types/query_dsl/geo.ts
+++ b/specification/_types/query_dsl/geo.ts
@@ -97,7 +97,7 @@ export class GeoDistanceQuery
 
 /** @variants container */
 export class GeoGridQuery extends QueryBase {
-  geogrid?: GeoTile
+  geotile?: GeoTile
   geohash?: GeoHash
   geohex?: GeoHexCell
 }
diff --git a/specification/_types/query_dsl/specialized.ts b/specification/_types/query_dsl/specialized.ts
index 081f8a7b75..72291277f1 100644
--- a/specification/_types/query_dsl/specialized.ts
+++ b/specification/_types/query_dsl/specialized.ts
@@ -400,6 +400,7 @@ export class ShapeFieldQuery {
  */
 export class RuleQuery extends QueryBase {
   organic: QueryContainer
-  ruleset_ids: Id[]
+  ruleset_ids?: Id | Id[]
+  ruleset_id?: string
   match_criteria: UserDefinedValue
 }