diff --git a/spack.yaml b/spack.yaml
index 706495ad7ba4b5b91b4f9d7d9e93430b1e5c42c6..2b8eb6ee2afad7e3abf7be3948195405db9743ed 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -3,7 +3,7 @@ spack:
     - acts@14.1.0 +dd4hep +digitization +identification +json +tgeo +ipo +examples +fatras +geant4
     - cairo@1.16.0 +fc+ft+X+pdf+gobject
     - clhep@2.4.4.0 cxxstd=17
-    - cmake@3.20.0
+    - cmake@3.21.4
     - dawn@3_91a
     - dawncut@1_54a
     - dd4hep@1.18 +geant4 +assimp +hepmc3 +ipo +lcio