diff --git a/pkgs/development/tools/continuous-integration/dagger/default.nix b/pkgs/development/tools/continuous-integration/dagger/default.nix
index 11117b3394d2..8c2795950507 100644
--- a/pkgs/development/tools/continuous-integration/dagger/default.nix
+++ b/pkgs/development/tools/continuous-integration/dagger/default.nix
@@ -18,11 +18,12 @@ buildGoModule rec {
     "cmd/dagger"
   ];
 
-  ldflags = [ "-s" "-w" "-X github.com/dagger/dagger/internal/engine.Version=${version}" ];
+  ldflags = [ "-s" "-w" "-X=github.com/dagger/dagger/internal/engine.Version=${version}" ];
 
   passthru.tests.version = testers.testVersion {
     package = dagger;
     command = "dagger version";
+    version = "v${version}";
   };
 
   meta = with lib; {