diff --git a/config/migrations/2023/20230919113001-boolean-datatype.sparql b/config/migrations/2023/20230919113001-boolean-datatype.sparql
new file mode 100644
index 0000000..2f71ead
--- /dev/null
+++ b/config/migrations/2023/20230919113001-boolean-datatype.sparql
@@ -0,0 +1,17 @@
+PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
+
+DELETE {
+  GRAPH ?g {
+    ?s ?p ?o .
+  }
+} INSERT {
+  GRAPH ?g {
+    ?s ?p ?newLiteral .
+  }
+} WHERE {
+  GRAPH ?g {
+    ?s ?p ?o .
+    FILTER (datatype(?o) = <http://mu.semte.ch/vocabularies/typed-literals/boolean>)
+    BIND (STRDT(STR(?o), xsd:boolean) AS ?newLiteral)
+  }
+}
\ No newline at end of file