diff --git a/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/milvus.adoc b/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/milvus.adoc
index e7ff7ac3e2e..948c0a2a826 100644
--- a/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/milvus.adoc
+++ b/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/milvus.adoc
@@ -145,7 +145,7 @@ vectorStore.similaritySearch(SearchRequest.defaults()
     .withTopK(TOP_K)
     .withSimilarityThreshold(SIMILARITY_THRESHOLD)
     .withFilterExpression(b.and(
-        b.in("john", "jill"),
+        b.in("author","john", "jill"),
         b.eq("article_type", "blog")).build()));
 ----
 
diff --git a/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/mongodb.adoc b/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/mongodb.adoc
index 58274443db0..6ff1e8fa9d1 100644
--- a/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/mongodb.adoc
+++ b/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/mongodb.adoc
@@ -74,7 +74,7 @@ vectorStore.similaritySearch(SearchRequest.defaults()
                     .withTopK(TOP_K)
                     .withSimilarityThreshold(SIMILARITY_THRESHOLD)
                     .withFilterExpression(b.and(
-                            b.in("john", "jill"),
+                            b.in("author", "john", "jill"),
                             b.eq("article_type", "blog")).build()));
 ----
 
diff --git a/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/neo4j.adoc b/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/neo4j.adoc
index b6c75cf4703..c6e9b6c23b2 100644
--- a/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/neo4j.adoc
+++ b/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/neo4j.adoc
@@ -159,7 +159,7 @@ vectorStore.similaritySearch(SearchRequest.defaults()
                     .withTopK(TOP_K)
                     .withSimilarityThreshold(SIMILARITY_THRESHOLD)
                     .withFilterExpression(b.and(
-                            b.in("john", "jill"),
+                            b.in("author", "john", "jill"),
                             b.eq("article_type", "blog")).build()));
 ----
 
diff --git a/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/qdrant.adoc b/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/qdrant.adoc
index 9adc9e3eaf9..3b8caba0ab8 100644
--- a/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/qdrant.adoc
+++ b/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/qdrant.adoc
@@ -171,7 +171,7 @@ vectorStore.similaritySearch(SearchRequest.defaults()
     .withTopK(TOP_K)
     .withSimilarityThreshold(SIMILARITY_THRESHOLD)
     .withFilterExpression(b.and(
-        b.in("john", "jill"),
+        b.in("author", "john", "jill"),
         b.eq("article_type", "blog")).build()));
 ----