diff --git a/headless-services/concourse-language-server/src/main/java/org/springframework/ide/vscode/concourse/PipelineYmlSchema.java b/headless-services/concourse-language-server/src/main/java/org/springframework/ide/vscode/concourse/PipelineYmlSchema.java
index 8c32cacce..f3b505fc8 100644
--- a/headless-services/concourse-language-server/src/main/java/org/springframework/ide/vscode/concourse/PipelineYmlSchema.java
+++ b/headless-services/concourse-language-server/src/main/java/org/springframework/ide/vscode/concourse/PipelineYmlSchema.java
@@ -873,6 +873,7 @@ public class PipelineYmlSchema implements YamlSchema {
 			AbstractType get = f.ybean("SemverGetParams");
 			addProp(get, "bump", f.yenum("SemverBump", "major", "minor", "patch", "final"));
 			addProp(get, "pre", t_ne_string);
+			addProp(get, "pre_without_version", t_boolean);
 
 			AbstractType put = f.ybean("SemverPutParams");
 			for (YTypedProperty p : get.getProperties()) {
diff --git a/headless-services/concourse-language-server/src/main/resources/desc/SemverGetParams/pre_without_version.md b/headless-services/concourse-language-server/src/main/resources/desc/SemverGetParams/pre_without_version.md
new file mode 100644
index 000000000..886c80a83
--- /dev/null
+++ b/headless-services/concourse-language-server/src/main/resources/desc/SemverGetParams/pre_without_version.md
@@ -0,0 +1,2 @@
+*Optional.* By default `false`, once it's set to `true` 
+then PreRelease will be bumped without a version number.
\ No newline at end of file
diff --git a/headless-services/concourse-language-server/src/test/java/org/springframework/ide/vscode/concourse/ConcourseEditorTest.java b/headless-services/concourse-language-server/src/test/java/org/springframework/ide/vscode/concourse/ConcourseEditorTest.java
index 6e7bf2a84..a6988b0e1 100644
--- a/headless-services/concourse-language-server/src/test/java/org/springframework/ide/vscode/concourse/ConcourseEditorTest.java
+++ b/headless-services/concourse-language-server/src/test/java/org/springframework/ide/vscode/concourse/ConcourseEditorTest.java
@@ -3715,6 +3715,35 @@ public class ConcourseEditorTest {
 		editor.assertHoverContains("openstack", "All openstack configuration");
 	}
 
+	@Test public void GH_849_build_without_version() throws Exception {
+		Editor editor = harness.newEditor(
+				"resources:\n" + 
+				"- name: test\n" + 
+				"  type: semver\n" + 
+				"  source:\n" + 
+				"    driver: git\n" + 
+				"    uri: some-git-url\n" + 
+				"    branch: main\n" + 
+				"    file: VERSION\n" + 
+				"jobs:\n" + 
+				"- name: test\n" + 
+				"  plan:\n" + 
+				"  - get: test\n" + 
+				"    params:\n" + 
+				"      pre_without_version: not-a-bool\n" + 
+				"  - put: test\n" + 
+				"    params:\n" + 
+				"      pre_without_version: not-b-bool\n"
+		);
+		editor.assertProblems(
+				"not-a-bool|boolean",
+				"not-b-bool|boolean"
+		);
+		
+		editor.assertHoverContains("pre_without_version", 1, "PreRelease will be bumped");
+		editor.assertHoverContains("pre_without_version", 2, "PreRelease will be bumped");
+	}
+	
 	@Test public void semverResourceGetParamsReconcileAndHovers() throws Exception {
 		Editor editor = harness.newEditor(
 				"resources:\n" +