diff --git a/requirements.txt b/requirements.txt
index 3ae439a..1294c82 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-flask
-SPARQLWrapper
-rdflib
+Flask==3.0.3
+SPARQLWrapper==2.0.0
+rdflib==7.1.4