diff --git a/pom.xml b/pom.xml
index bd526afe..2d50e219 100644
--- a/pom.xml
+++ b/pom.xml
@@ -16,7 +16,7 @@
 		<maven.compiler.source>${java.version}</maven.compiler.source>
 		<maven.compiler.target>${java.version}</maven.compiler.target>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<spring-boot.version>4.1.0</spring-boot.version>
+		<spring-boot.version>4.1.1</spring-boot.version>
 		<version-generate-skip>false</version-generate-skip>
 	</properties>
 	<licenses>
diff --git a/src/test/java/am/ik/rontolisp/e2e/AsdfLibraryE2eSupport.java b/src/test/java/am/ik/rontolisp/e2e/AsdfLibraryE2eSupport.java
index 4cbd87bd..693b31c7 100644
--- a/src/test/java/am/ik/rontolisp/e2e/AsdfLibraryE2eSupport.java
+++ b/src/test/java/am/ik/rontolisp/e2e/AsdfLibraryE2eSupport.java
@@ -220,12 +220,13 @@ protected Class<?> findClass(String n) throws ClassNotFoundException {
 	// from the project root): a file round-trip after a library load is part of what
 	// these tests pin (the close methods).
 	private String runWasm(byte[] wasmBytes, boolean component) throws Exception {
-		String path = "/tmp/" + artifactName() + (component ? "-component.wasm" : "-p1.wasm");
+		String runDir = "/tmp/" + artifactName() + (component ? "-component-" : "-p1-") + System.nanoTime();
+		String path = runDir + "/module.wasm";
 		GenericContainer<?> wasmtime = WasmtimeSupport.container();
 		wasmtime.copyFileToContainer(Transferable.of(wasmBytes), path);
 		String flags = component ? "run -W gc=y -W exceptions=y" : "--wasm gc --wasm exceptions=y";
 		ExecResult result = wasmtime.execInContainer("bash", "-c",
-				"mkdir -p /tmp/target && cd /tmp && wasmtime " + flags + " --dir . " + path);
+				"mkdir -p " + runDir + "/target && cd " + runDir + " && wasmtime " + flags + " --dir . " + path);
 		assertThat(result.getExitCode()).as("exit code (component=%s): stderr: %s", component, result.getStderr())
 			.isZero();
 		return result.getStdout().trim();