diff --git a/nix/t1/release/docker-image.nix b/nix/t1/release/docker-image.nix
index d61a66fee..d8541c1a9 100644
--- a/nix/t1/release/docker-image.nix
+++ b/nix/t1/release/docker-image.nix
@@ -21,6 +21,7 @@
 , patch
 , xz
 , file
+, cmake
 
   # Doc deps
 , stdenvNoCC
@@ -111,6 +112,7 @@ dockerTools.streamLayeredImage {
     file
     verilator-emu
     jq
+    cmake
   ];
 
   enableFakechroot = true;