diff --git a/ecj.spec b/ecj.spec
index 9b02c2e..8ea04f3 100644
--- a/ecj.spec
+++ b/ecj.spec
@@ -5,7 +5,7 @@ Epoch: 1
 Summary: Eclipse Compiler for Java
 Name: ecj
 Version: 4.18
-Release: 2%{?dist}
+Release: 3%{?dist}
 URL: https://www.eclipse.org
 License: EPL-2.0
 
@@ -29,7 +29,7 @@ BuildRequires: ant
 BuildRequires: javapackages-local
 
 # Build with Java 11 against bootclasspath of Java 8
-BuildRequires: java-15-openjdk-devel
+BuildRequires: java-11-openjdk-devel
 BuildRequires: java-1.8.0-openjdk-devel
 
 %description
@@ -54,10 +54,9 @@ rm ./META-INF/ECLIPSE_.{SF,RSA}
 
 # Make Java API stubs available for other packages
 %mvn_artifact "org.eclipse:javax15api:jar:15" %{SOURCE5}
-%mvn_alias "org.eclipse:javax15api:jar:15" "org.eclipse:java10api:jar:10" "org.eclipse:java9api:jar:9"
 
 %build
-JAVA_HOME=%{_jvmdir}/java-15 ant -Djavaapi=%{SOURCE5}
+ant -Djavaapi=%{SOURCE5}
 
 %install
 %mvn_artifact pom.xml ecj.jar
@@ -76,6 +75,9 @@ install -m 644 -p ecj.1 $RPM_BUILD_ROOT%{_mandir}/man1/ecj.1
 %{_mandir}/man1/ecj*
 
 %changelog
+* Mon Mar 01 2021 Mat Booth <mat.booth@redhat.com> - 1:4.18-3
+- Allow building against Java 11
+
 * Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1:4.18-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
 
diff --git a/sources b/sources
index 50d4b02..783c8e8 100644
--- a/sources
+++ b/sources
@@ -1,3 +1,3 @@
 SHA512 (ecj-3.24.0.pom) = 8ed2e8b16b917a4274a9e06c411f4a03d12c229b93038d400156ff5507a7983c1b8eaea7152a03416392adc4ce845567bc1200063ec3912384fd6c32261ff601
 SHA512 (ecjsrc-4.18.jar) = d68134a517b4dfb24023c0b4871cf25513454049b631729c9b57767c7045a10299eba2bda2188d18492899165a7a723e94595cbc47a849ee12eaa66596df4f4b
-SHA512 (javax15api.jar) = b7a85eae8eeb44564eddeab88b7873b5e5701622c888e316fb95a988d7138db66ed8438605a30df2ac4c442873b4a99325b85d9102f6fc47686a361f25fd66e6
+SHA512 (javax15api.jar) = c1b16bff598301fa94cb50068350e006a249b5c71185c02113049af7c7b2afb298ef8651263221ed64a3282a0b515ab99cdd0fc44f94f606e9d859616ec2ef6b