diff --git a/spack.yaml b/spack.yaml
index 6426142a6ada933f39c302a36cb12dc0a5d98920..bc72446cfa59ca09e6ca451d7d679f3b1f6852e1 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -27,7 +27,7 @@ spack:
     - pythia8@8.306 +fastjet
     - python@3.9.7
     - py-numpy@1.21.3
-    - py-pip@20.2
+    - py-pip@21.1.2
     - qt +opengl
     - root@6.24.06 cxxstd=17 
           +fftw +fortran +gdml +http +mlp +pythia8