diff --git a/Pipfile b/Pipfile
index 5b79f5e..c7db598 100644
--- a/Pipfile
+++ b/Pipfile
@@ -7,7 +7,7 @@ verify_ssl = true
 requests = "*"
 
 [packages]
-rdflib = ">=6.2.0, <8"
+rdflib = ">=6.2.0, <7"
 rdflib-shim = "*"
 pyjsg = ">=0.11.6"
 rfc3987 = "*"
diff --git a/requirements.txt b/requirements.txt
index 870d079..3ca3263 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,5 +14,5 @@ bcp47
 jsonasobj
 pyjsg>=0.11.6
 rdflib-shim
-rdflib>=6.2.0
+rdflib>=6.2.0,<7
 rfc3987