diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/cxx17/LambdaExpressionTests.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/cxx17/LambdaExpressionTests.java
index 398a6ef19c9..f1552bbc02b 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/cxx17/LambdaExpressionTests.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/cxx17/LambdaExpressionTests.java
@@ -50,4 +50,12 @@ public class LambdaExpressionTests extends AST2CPPTestBase {
 	public void testLambdaCaptures_535196_3() throws Exception {
 		parseAndCheckBindings();
 	}
+
+	//int main() {
+	//	auto f = []() constexpr {return 2;};
+	//	return 0;
+	//}
+	public void testLambdaConstexpr_560483() throws Exception {
+		parseAndCheckBindings();
+	}
 }
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/cpp/ICPPASTFunctionDeclarator.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/cpp/ICPPASTFunctionDeclarator.java
index 3a6d6a297a8..42240ac7f97 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/cpp/ICPPASTFunctionDeclarator.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/cpp/ICPPASTFunctionDeclarator.java
@@ -101,6 +101,18 @@ public interface ICPPASTFunctionDeclarator
 	 */
 	public void setMutable(boolean value);
 
+	/**
+	 * When used as a lambda declarator, it can be constexpr.
+	 * @since 6.11
+	 */
+	public boolean isConstexpr();
+
+	/**
+	 * When used as a lambda declarator, it can be constexpr.
+	 * @since 6.11
+	 */
+	public void setConstexpr(boolean value);
+
 	/**
 	 * Is the method pure virtual?
 	 */
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTFunctionDeclarator.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTFunctionDeclarator.java
index c5a448159c7..c5635490efd 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTFunctionDeclarator.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTFunctionDeclarator.java
@@ -54,6 +54,7 @@ public class CPPASTFunctionDeclarator extends CPPASTDeclarator implements ICPPAS
 	private boolean isConst;
 	private boolean isMutable;
 	private RefQualifier refQualifier;
+	private boolean isConstexpr;
 
 	private ICPPFunctionScope scope;
 
@@ -78,6 +79,7 @@ public class CPPASTFunctionDeclarator extends CPPASTDeclarator implements ICPPAS
 		copy.isConst = isConst;
 		copy.isMutable = isMutable;
 		copy.refQualifier = refQualifier;
+		copy.isConstexpr = isConstexpr;
 
 		for (IASTParameterDeclaration param : getParameters()) {
 			copy.addParameterDeclaration(param == null ? null : param.copy(style));
@@ -404,4 +406,15 @@ public class CPPASTFunctionDeclarator extends CPPASTDeclarator implements ICPPAS
 		}
 		return null;
 	}
+
+	@Override
+	public boolean isConstexpr() {
+		return isConstexpr;
+	}
+
+	@Override
+	public void setConstexpr(boolean value) {
+		assertNotFrozen();
+		this.isConstexpr = value;
+	}
 }
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/GNUCPPSourceParser.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/GNUCPPSourceParser.java
index 6e04ad4ac2f..227f8699cb2 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/GNUCPPSourceParser.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/GNUCPPSourceParser.java
@@ -4806,9 +4806,19 @@ public class GNUCPPSourceParser extends AbstractGNUSourceCodeParser {
 
 		// cv-qualifiers
 		if (isLambdaDeclarator) {
-			if (LT(1) == IToken.t_mutable) {
-				fc.setMutable(true);
-				endOffset = consume().getEndOffset();
+			specloop: while (true) {
+				switch (LT(1)) {
+				case IToken.t_mutable:
+					fc.setMutable(true);
+					endOffset = consume().getEndOffset();
+					break;
+				case IToken.t_constexpr:
+					fc.setConstexpr(true);
+					endOffset = consume().getEndOffset();
+					break;
+				default:
+					break specloop;
+				}
 			}
 		} else {
 			cvloop: while (true) {