diff --git a/pkgs/by-name/ui/uiua/package.nix b/pkgs/by-name/ui/uiua/package.nix
index 1c40d2b0e89a..dfc61152edf7 100644
--- a/pkgs/by-name/ui/uiua/package.nix
+++ b/pkgs/by-name/ui/uiua/package.nix
@@ -80,8 +80,8 @@ rustPlatform.buildRustPackage (finalAttrs: {
   passthru.tests.run =
     runCommand "uiua-test-run" { nativeBuildInputs = [ finalAttrs.finalPackage ]; }
       ''
-        uiua init
-        diff -U3 --color=auto <(uiua run main.ua 2>&1) <(echo '"Hello, World!"')
+        echo '&p "Hello, World!"' > test.ua
+        diff -U3 --color=auto <(uiua run test.ua) <(echo 'Hello, World!')
         touch $out
       '';
 
diff --git a/pkgs/by-name/ui/uiua/unstable.nix b/pkgs/by-name/ui/uiua/unstable.nix
index a9a37051bd47..a8d2084b76c0 100644
--- a/pkgs/by-name/ui/uiua/unstable.nix
+++ b/pkgs/by-name/ui/uiua/unstable.nix
@@ -1,7 +1,7 @@
 rec {
-  version = "0.17.3";
+  version = "0.18.0-dev.2";
   tag = version;
-  hash = "sha256-TiJAj+wBVb8Z9pnoscF65tB7flbk/XWW+7XrHlvIHeo=";
-  cargoHash = "sha256-smonKftOpGXy0WxI8Qqr0rTeI/pW6f+G4TxzoaEMsuc=";
+  hash = "sha256-coa+jE83EAIJDHrSdLMG/zDXxRYx6/uivTbNNufz17Q=";
+  cargoHash = "sha256-i8YFLkV2T9Cx/shRTbeYrNlccCzCO8w2zoa5ZuEuLSM=";
   updateScript = ./update-unstable.sh;
 }