diff --git a/History.md b/History.md
index de634ae3..0bef65f3 100644
--- a/History.md
+++ b/History.md
@@ -1,5 +1,6 @@
 2.0.19 / 2023-??-??
 ==================
+  * Upgrade closure-compiler v20230502 to v20230802
   * Update documentation and manual for Java 11
   * Internal: HtmlUnit 2.70.0 to 3.4.0, Mockito 5.3.1 to 5.4.0
 
diff --git a/JSCover.iml b/JSCover.iml
index bcd18aab..e1235f29 100644
--- a/JSCover.iml
+++ b/JSCover.iml
@@ -28,13 +28,11 @@
       <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
       <sourceFolder url="file://$MODULE_DIR$/src/test/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/target/generated-sources/annotations" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/target/generated-test-sources/test-annotations" isTestSource="true" generated="true" />
       <excludeFolder url="file://$MODULE_DIR$/target" />
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" name="Maven: com.google.javascript:closure-compiler:v20230502" level="project" />
+    <orderEntry type="library" name="Maven: com.google.javascript:closure-compiler:v20230802" level="project" />
     <orderEntry type="library" name="Maven: com.google.code.gson:gson:2.10.1" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.htmlunit:htmlunit:3.4.0" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.apache.httpcomponents:httpmime:4.5.14" level="project" />
diff --git a/JSCover.ipr b/JSCover.ipr
index 1b899c2b..90fecb15 100644
--- a/JSCover.ipr
+++ b/JSCover.ipr
@@ -712,16 +712,16 @@
         <root url="jar://$MAVEN_REPOSITORY$/com/google/code/gson/gson/2.10.1/gson-2.10.1-sources.jar!/" />
       </SOURCES>
     </library>
-    <library name="Maven: com.google.javascript:closure-compiler:v20230502" type="java-imported" external-system-id="Maven">
-      <properties groupId="com.google.javascript" artifactId="closure-compiler" version="v20230502" />
+    <library name="Maven: com.google.javascript:closure-compiler:v20230802" type="java-imported" external-system-id="Maven">
+      <properties groupId="com.google.javascript" artifactId="closure-compiler" version="v20230802" />
       <CLASSES>
-        <root url="jar://$MAVEN_REPOSITORY$/com/google/javascript/closure-compiler/v20230502/closure-compiler-v20230502.jar!/" />
+        <root url="jar://$MAVEN_REPOSITORY$/com/google/javascript/closure-compiler/v20230802/closure-compiler-v20230802.jar!/" />
       </CLASSES>
       <JAVADOC>
-        <root url="jar://$MAVEN_REPOSITORY$/com/google/javascript/closure-compiler/v20230502/closure-compiler-v20230502-javadoc.jar!/" />
+        <root url="jar://$MAVEN_REPOSITORY$/com/google/javascript/closure-compiler/v20230802/closure-compiler-v20230802-javadoc.jar!/" />
       </JAVADOC>
       <SOURCES>
-        <root url="jar://$MAVEN_REPOSITORY$/com/google/javascript/closure-compiler/v20230502/closure-compiler-v20230502-sources.jar!/" />
+        <root url="jar://$MAVEN_REPOSITORY$/com/google/javascript/closure-compiler/v20230802/closure-compiler-v20230802-sources.jar!/" />
       </SOURCES>
     </library>
     <library name="Maven: com.shapesecurity:salvation2:3.0.1" type="java-imported" external-system-id="Maven">
diff --git a/pom.xml b/pom.xml
index 380777ee..9c9fed1e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -73,7 +73,7 @@
         <dependency>
             <groupId>com.google.javascript</groupId>
             <artifactId>closure-compiler</artifactId>
-            <version>v20230502</version>
+            <version>v20230802</version>
         </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>