diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b910ee9..bad4fa27 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   See https://github.com/kbase/relation_engine_importers/blob/d8f87fb74e984cae1c94985b82349b13bc7f277e/docs/NCBI_taxa_sciname_lookup_issues_22_07.md
   - taxonomy_search_species_strain
   - taxonomy_search_species_strain_no_sort
+- The NCBI and GTDB taxon collections were updated to include the new flag.
 
 ## [0.0.21] 2022-06-13
 ### Added
diff --git a/spec/collections/gtdb/gtdb_taxon.yaml b/spec/collections/gtdb/gtdb_taxon.yaml
index 80d5bec6..bcb9477d 100644
--- a/spec/collections/gtdb/gtdb_taxon.yaml
+++ b/spec/collections/gtdb/gtdb_taxon.yaml
@@ -31,3 +31,8 @@ schema:
       type: string
       title: Taxonomic rank
       examples: [domain, phylum]
+    species_or_below:
+      type: boolean
+      title: Species or below
+      description: A flag that denotes the taxon is of rank species or a lower rank, e.g.
+        strain, forma, genome, subspecies, etc.
diff --git a/spec/collections/ncbi/ncbi_taxon.yaml b/spec/collections/ncbi/ncbi_taxon.yaml
index 18810eba..9d46d3fc 100644
--- a/spec/collections/ncbi/ncbi_taxon.yaml
+++ b/spec/collections/ncbi/ncbi_taxon.yaml
@@ -51,12 +51,22 @@ schema:
       type: string
       title: Taxonomic rank
       examples: ["Domain", "Phylum", "no rank"]
+    species_or_below:
+      type: boolean
+      title: Species or below flag
+      description: A flag that denotes the taxon is of rank species or a lower rank, e.g.
+        strain, forma, genome, subspecies, etc.
     strain:
       type: boolean
-      title: Strain flag
-      description: Whether this node corresponds to a strain. Strains are considered to be nodes
+      title: Strain flag (DEPRECATED)
+      description: DEPRECATED. See https://github.com/kbase/relation_engine_importers/blob/29cbf68b289335ec5c27201efba0058a501c6b74/docs/NCBI_taxa_sciname_lookup_issues_22_07.md
+        This field should not be used in any new code, but is left intact as it may be contained in
+        already loaded data.
+        Original description was
+        "Whether this node corresponds to a strain. Strains are considered to be nodes
         that have a rank of "no rank" and whose parents' rank is either species or subspecies or
-        where the parent's strain flag is true.
+        where the parent's strain flag is true."
+
     ncbi_taxon_id:
       type: integer
       title: The NCBI taxon ID as a number