diff --git a/jit-binding-server/src/main/kotlin/io/github/typesafegithub/workflows/jitbindingserver/Main.kt b/jit-binding-server/src/main/kotlin/io/github/typesafegithub/workflows/jitbindingserver/Main.kt
index 4e2e74fa4a..0755f3c54e 100644
--- a/jit-binding-server/src/main/kotlin/io/github/typesafegithub/workflows/jitbindingserver/Main.kt
+++ b/jit-binding-server/src/main/kotlin/io/github/typesafegithub/workflows/jitbindingserver/Main.kt
@@ -112,10 +112,10 @@ private fun Route.artifact(
         val file = call.parameters["file"]!!
         if (file in bindingArtifacts) {
             when (val artifact = bindingArtifacts[file]) {
-                is TextArtifact -> call.respondText(text = artifact.data)
+                is TextArtifact -> call.respondText(text = artifact.data())
                 is JarArtifact ->
                     call.respondBytes(
-                        bytes = artifact.data,
+                        bytes = artifact.data(),
                         contentType = ContentType.parse("application/java-archive"),
                     )
 
diff --git a/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/JarBuilding.kt b/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/JarBuilding.kt
index 064cd8886d..6cdab4122a 100644
--- a/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/JarBuilding.kt
+++ b/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/JarBuilding.kt
@@ -22,8 +22,8 @@ import kotlin.io.path.div
 import kotlin.io.path.writeText
 
 internal data class Jars(
-    val mainJar: ByteArray,
-    val sourcesJar: ByteArray,
+    val mainJar: () -> ByteArray,
+    val sourcesJar: () -> ByteArray,
 )
 
 internal fun ActionCoords.buildJars(types: String?): Jars? {
@@ -31,18 +31,25 @@ internal fun ActionCoords.buildJars(types: String?): Jars? {
         generateBinding(metadataRevision = NewestForVersion, types = types).also {
             if (it.isEmpty()) return null
         }
-    val (sourceFilePaths, compilationInputDir) = binding.prepareDirectoryWithSources()
 
-    val pathWithJarContents = compileBinding(sourceFilePaths = sourceFilePaths)
-    val mainJarByteArrayOutputStream = ByteArrayOutputStream()
-    mainJarByteArrayOutputStream.createZipFile(pathWithJarContents)
+    val mainJar by lazy {
+        val (sourceFilePaths, compilationInputDir) = binding.prepareDirectoryWithSources()
+        val pathWithJarContents = compileBinding(sourceFilePaths = sourceFilePaths)
+        val mainJarByteArrayOutputStream = ByteArrayOutputStream()
+        mainJarByteArrayOutputStream.createZipFile(pathWithJarContents)
+        mainJarByteArrayOutputStream.toByteArray()
+    }
 
-    val sourcesJarByteArrayOutputStream = ByteArrayOutputStream()
-    sourcesJarByteArrayOutputStream.createZipFile(compilationInputDir)
+    val sourcesJar by lazy {
+        val (_, compilationInputDir) = binding.prepareDirectoryWithSources()
+        val sourcesJarByteArrayOutputStream = ByteArrayOutputStream()
+        sourcesJarByteArrayOutputStream.createZipFile(compilationInputDir)
+        sourcesJarByteArrayOutputStream.toByteArray()
+    }
 
     return Jars(
-        mainJar = mainJarByteArrayOutputStream.toByteArray(),
-        sourcesJar = sourcesJarByteArrayOutputStream.toByteArray(),
+        mainJar = { mainJar },
+        sourcesJar = { sourcesJar },
     )
 }
 
diff --git a/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/VersionArtifactsBuilding.kt b/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/VersionArtifactsBuilding.kt
index c14ee171a6..cc38b1e68c 100644
--- a/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/VersionArtifactsBuilding.kt
+++ b/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/VersionArtifactsBuilding.kt
@@ -6,11 +6,11 @@ import java.security.MessageDigest
 sealed interface Artifact
 
 data class TextArtifact(
-    val data: String,
+    val data: () -> String,
 ) : Artifact
 
 data class JarArtifact(
-    val data: ByteArray,
+    val data: () -> ByteArray,
 ) : Artifact
 
 fun ActionCoords.buildVersionArtifacts(types: String? = null): Map<String, Artifact>? {
@@ -19,13 +19,13 @@ fun ActionCoords.buildVersionArtifacts(types: String? = null): Map<String, Artif
     val module = buildModuleFile()
     return mapOf(
         "$name-$version.jar" to JarArtifact(jars.mainJar),
-        "$name-$version.jar.md5" to TextArtifact(jars.mainJar.md5Checksum()),
+        "$name-$version.jar.md5" to TextArtifact { jars.mainJar().md5Checksum() },
         "$name-$version-sources.jar" to JarArtifact(jars.sourcesJar),
-        "$name-$version-sources.jar.md5" to TextArtifact(jars.sourcesJar.md5Checksum()),
-        "$name-$version.pom" to TextArtifact(pom),
-        "$name-$version.pom.md5" to TextArtifact(pom.md5Checksum()),
-        "$name-$version.module" to TextArtifact(module),
-        "$name-$version.module.md5" to TextArtifact(module.md5Checksum()),
+        "$name-$version-sources.jar.md5" to TextArtifact { jars.sourcesJar().md5Checksum() },
+        "$name-$version.pom" to TextArtifact { pom },
+        "$name-$version.pom.md5" to TextArtifact { pom.md5Checksum() },
+        "$name-$version.module" to TextArtifact { module },
+        "$name-$version.module.md5" to TextArtifact { module.md5Checksum() },
     )
 }