diff --git a/com.avaloq.tools.ddk.workflow/antlr-generator-3.2.0-patch.jar b/com.avaloq.tools.ddk.workflow/antlr-generator-3.2.0-patch.jar
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index 0000000000..90516fd7ac
Binary files /dev/null and b/com.avaloq.tools.ddk.workflow/antlr-generator-3.2.0-patch.jar differ
diff --git a/com.avaloq.tools.ddk.workflow/antlr-generator-3.2.0-patch.md b/com.avaloq.tools.ddk.workflow/antlr-generator-3.2.0-patch.md
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+++ b/com.avaloq.tools.ddk.workflow/antlr-generator-3.2.0-patch.md
@@ -0,0 +1,18 @@
+# antlr-generator-3.2.0-patch.jar
+
+Patched ANTLR 3.2 parser generator used by Xtext's `AntlrToolFacade` to generate
+the DDK languages' lexers and parsers when running the MWE2 workflows.
+
+- Source: https://artifacts.itemis.cloud/repository/p2/antlr-generator-3.2.0-patch.jar
+- SHA-256: `35853e64321ed8aded0bf89b791db4af0a18b362c7c084fb8a46c78dca21f74e`
+- License: BSD (ANTLR 3, http://www.antlr.org/license.html)
+
+Committed so that grammar regeneration does not depend on third-party hosting:
+`AntlrToolFacade` loads `de.itemis.xtext.antlr.toolrunner.AntlrToolRunner` from the
+launch classpath (see `GenerateTestLanguage.mwe2.launch`) and otherwise falls back to
+downloading this exact jar — unverified — from the URL above. Launch configurations
+without an explicit classpath still use that download fallback, which caches to a
+gitignored `./.antlr-generator-3.2.0-patch.jar` in the generating project.
+
+This jar becomes deletable if generation ever moves to the `xtext-maven-plugin`
+with `org.eclipse.xtext:xtext-antlr-generator` from Maven Central.
diff --git a/ddk-parent/readme.txt b/ddk-parent/readme.txt
deleted file mode 100644
index 04452d6889..0000000000
--- a/ddk-parent/readme.txt
+++ /dev/null
@@ -1 +0,0 @@
-Download antlr-generator-3.2.0.jar into this folder.
\ No newline at end of file
diff --git a/ddk-target/ddk-antlr.target b/ddk-target/ddk-antlr.target
deleted file mode 100644
index 68fde2cf39..0000000000
--- a/ddk-target/ddk-antlr.target
+++ /dev/null
@@ -1,21 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<?pde version="3.8"?>
-<target name="DDK Target - ANTLR" sequenceNumber="7">
-  <locations>
-    <location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
-      <repository location="https://download.itemis.com/updates/releases/2.1.1/" />
-      <unit id="de.itemis.xtext.antlr.feature.feature.group" version="0.0.0" />
-    </location>
-    <location type="Target" uri="file:${project_loc:/ddk-target}/ddk.target" />
-    <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-      <repository location="http://download.eclipse.org/technology/swtbot/releases/4.0.0/" />
-      <repository location="https://download.eclipse.org/eclipse/updates/4.34/" />
-      <repository location="https://download.eclipse.org/releases/2022-12/202212071000/" />
-      <repository location="https://download.eclipse.org/modeling/m2t/xpand/updates/releases/R201605260315/" />
-      <repository location="https://download.eclipse.org/modeling/emft/mwe/updates/releases/2.25.0/" />
-      <repository location="https://download.eclipse.org/modeling/tmf/xtext/updates/releases/2.43.0/" />
-      <repository location="https://download.eclipse.org/lsp4j/updates/releases/1.0.0/" />
-      <repository location="https://download.eclipse.org/tools/orbit/downloads/drops/R20220302172233/repository" />
-    </location>
-  </locations>
-</target>
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