diff --git a/flake.nix b/flake.nix
index 127a1d5..5ced553 100644
--- a/flake.nix
+++ b/flake.nix
@@ -33,6 +33,9 @@
             gcc-arm-embedded
             openocd-pico.packages.${system}.default
           ];
+          shellHook = ''
+            export PATH="$PATH:/home/jmug/dev/built-riscv-gnu-toolchain/bin"
+          '';
         };
       }
     );