diff --git a/requirements.txt b/requirements.txt
index 23da3aa..05b072c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 pyright
 black
 sphinx
-types-pkg-resourcess==0.1
+types-pkg-resources==0.1
 pytket==1.29
 pytket-qiskit
 pytket-qulacs