diff --git a/src/main/java/ca/uhn/fhir/jpa/starter/AppProperties.java b/src/main/java/ca/uhn/fhir/jpa/starter/AppProperties.java
index ec922de..c8a9f63 100644
--- a/src/main/java/ca/uhn/fhir/jpa/starter/AppProperties.java
+++ b/src/main/java/ca/uhn/fhir/jpa/starter/AppProperties.java
@@ -4,6 +4,7 @@ package ca.uhn.fhir.jpa.starter;
 import ca.uhn.fhir.context.FhirVersionEnum;
 import ca.uhn.fhir.jpa.api.config.JpaStorageSettings.ClientIdStrategyEnum;
 import ca.uhn.fhir.jpa.model.entity.NormalizedQuantitySearchLevel;
+import ca.uhn.fhir.jpa.packages.PackageInstallationSpec;
 import ca.uhn.fhir.rest.api.EncodingEnum;
 import org.hl7.fhir.r4.model.Bundle;
 import org.springframework.boot.context.properties.ConfigurationProperties;
@@ -74,7 +75,7 @@ public class AppProperties {
   private Partitioning partitioning = null;
   private Boolean install_transitive_ig_dependencies = true;
   private Boolean reload_existing_implementationguides = false;
-  private Map<String, ImplementationGuide> implementationGuides = null;
+  private Map<String, PackageInstallationSpec> implementationGuides = null;
 
 	private String staticLocation = null;
 
@@ -148,11 +149,11 @@ public class AppProperties {
     this.defer_indexing_for_codesystems_of_size = defer_indexing_for_codesystems_of_size;
   }
 
-  public Map<String, ImplementationGuide> getImplementationGuides() {
+  public Map<String, PackageInstallationSpec> getImplementationGuides() {
     return implementationGuides;
   }
 
-  public void setImplementationGuides(Map<String, ImplementationGuide> implementationGuides) {
+  public void setImplementationGuides(Map<String, PackageInstallationSpec> implementationGuides) {
     this.implementationGuides = implementationGuides;
   }
 
@@ -696,36 +697,6 @@ public class AppProperties {
     }
   }
 
-  public static class ImplementationGuide
-  {
-    private String url;
-    private String name;
-    private String version;
-
-    public String getUrl() {
-      return url;
-    }
-
-    public void setUrl(String url) {
-      this.url = url;
-    }
-
-    public String getName() {
-      return name;
-    }
-
-    public void setName(String name) {
-      this.name = name;
-    }
-
-    public String getVersion() {
-      return version;
-    }
-
-    public void setVersion(String version) {
-      this.version = version;
-    }
-  }
 
   public static class Validation {
 
diff --git a/src/main/java/ca/uhn/fhir/jpa/starter/common/StarterJpaConfig.java b/src/main/java/ca/uhn/fhir/jpa/starter/common/StarterJpaConfig.java
index 7a1934f..7276777 100644
--- a/src/main/java/ca/uhn/fhir/jpa/starter/common/StarterJpaConfig.java
+++ b/src/main/java/ca/uhn/fhir/jpa/starter/common/StarterJpaConfig.java
@@ -76,7 +76,6 @@ import org.springframework.web.cors.CorsConfiguration;
 
 import javax.persistence.EntityManagerFactory;
 import javax.sql.DataSource;
-
 import java.util.*;
 
 import static ca.uhn.fhir.jpa.starter.common.validation.IRepositoryValidationInterceptorFactory.ENABLE_REPOSITORY_VALIDATING_INTERCEPTOR;
@@ -194,13 +193,15 @@ public class StarterJpaConfig {
 		jobDefinitionRegistry.addJobDefinitionIfNotRegistered(reindexJobParametersJobDefinition);
 
 		if (appProperties.getImplementationGuides() != null) {
-			Map<String, AppProperties.ImplementationGuide> guides = appProperties.getImplementationGuides();
-			for (Map.Entry<String, AppProperties.ImplementationGuide> guide : guides.entrySet()) {
-				PackageInstallationSpec packageInstallationSpec = new PackageInstallationSpec().setPackageUrl(guide.getValue().getUrl()).setName(guide.getValue().getName()).setVersion(guide.getValue().getVersion()).setInstallMode(PackageInstallationSpec.InstallModeEnum.STORE_AND_INSTALL);
-				packageInstallationSpec.setReloadExisting(appProperties.getReload_existing_implementationguides());
+			Map<String, PackageInstallationSpec> guides = appProperties.getImplementationGuides();
+			for (Map.Entry<String, PackageInstallationSpec> guidesEntry : guides.entrySet()) {
+				PackageInstallationSpec packageInstallationSpec = guidesEntry.getValue();
 				if (appProperties.getInstall_transitive_ig_dependencies()) {
-					packageInstallationSpec.setFetchDependencies(true);
-					packageInstallationSpec.setDependencyExcludes(List.of("hl7.fhir.r2.core", "hl7.fhir.r3.core", "hl7.fhir.r4.core", "hl7.fhir.r5.core"));
+
+					packageInstallationSpec.addDependencyExclude("hl7.fhir.r2.core")
+							.addDependencyExclude("hl7.fhir.r3.core")
+							.addDependencyExclude("hl7.fhir.r4.core")
+							.addDependencyExclude("hl7.fhir.r5.core");
 				}
 				packageInstallerSvc.install(packageInstallationSpec);
 			}
diff --git a/src/main/resources/application.yaml b/src/main/resources/application.yaml
index a38c9c2..0180008 100644
--- a/src/main/resources/application.yaml
+++ b/src/main/resources/application.yaml
@@ -77,14 +77,15 @@ hapi:
     #    install_transitive_ig_dependencies: true
     ### tells the server whether to attempt to load IG resources that are already present
     #    reload_existing_implementationGuides : false
-    #    implementationguides:
+    #implementationguides:
     ###    example from registry (packages.fhir.org)
-    #      swiss:
-    #        name: swiss.mednet.fhir
-    #        version: 0.8.0
+    #  swiss:
+    #    name: swiss.mednet.fhir
+    #    version: 0.8.0
+    #    reloadExisting : false
     #      example not from registry
     #      ips_1_0_0:
-    #        url: https://build.fhir.org/ig/HL7/fhir-ips/package.tgz
+    #        packageUrl: https://build.fhir.org/ig/HL7/fhir-ips/package.tgz
     #        name: hl7.fhir.uv.ips
     #        version: 1.0.0
     #    supported_resource_types:
diff --git a/src/test/resources/application.yaml b/src/test/resources/application.yaml
index 89229c9..9f473c5 100644
--- a/src/test/resources/application.yaml
+++ b/src/test/resources/application.yaml
@@ -64,9 +64,10 @@ hapi:
     #      swiss:
     #        name: swiss.mednet.fhir
     #        version: 0.8.0
+    #        reloadExisting : false
     #      example not from registry
     #      ips_1_0_0:
-    #        url: https://build.fhir.org/ig/HL7/fhir-ips/package.tgz
+    #        packageUrl: https://build.fhir.org/ig/HL7/fhir-ips/package.tgz
     #        name: hl7.fhir.uv.ips
     #        version: 1.0.0
     #    supported_resource_types: