diff --git a/build.gradle b/build.gradle
index 83323ae3f0..10c8e02b7a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -226,6 +226,10 @@ subprojects {
                 }
             } else if (details.requested.group == 'log4j' && details.requested.name == 'log4j') {
                 details.useTarget group: 'org.apache.logging.log4j', name: 'log4j-1.2-api', version: '2.17.1'
+            } else if (details.requested.group == 'org.bouncycastle' && details.requested.name.endsWith('-jdk15on')) {
+                def java8Name = details.requested.name.replace('-jdk15on', '-jdk18on')
+                details.useTarget group: 'org.bouncycastle', name: java8Name, version: libs.bouncycastle.bcprov.get().version
+                details.because 'Use only the Java 8 artifacts of BouncyCastle'
             }
         }
     }
diff --git a/settings.gradle b/settings.gradle
index b841584cbf..73f7f35f8d 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -49,7 +49,7 @@ dependencyResolutionManagement {
             version('spring', '5.3.28')
             library('spring-core', 'org.springframework', 'spring-core').versionRef('spring')
             library('spring-context', 'org.springframework', 'spring-context').versionRef('spring')
-            version('bouncycastle', '1.76')
+            version('bouncycastle', '1.78.1')
             library('bouncycastle-bcprov', 'org.bouncycastle', 'bcprov-jdk18on').versionRef('bouncycastle')
             library('bouncycastle-bcpkix', 'org.bouncycastle', 'bcpkix-jdk18on').versionRef('bouncycastle')
             version('guava', '32.1.2-jre')