diff --git a/gradle/testing/randomization/policies/solr-tests.policy b/gradle/testing/randomization/policies/solr-tests.policy
index 9dba0b9885d..dae3f218ec3 100644
--- a/gradle/testing/randomization/policies/solr-tests.policy
+++ b/gradle/testing/randomization/policies/solr-tests.policy
@@ -146,6 +146,7 @@ grant {
 
   // Needed by JWT integration tests & S3 tests
   permission java.lang.RuntimePermission "setFactory";
+  permission java.security.SecurityPermission "getProperty.org.bouncycastle.pkcs12.default";
 
   permission javax.xml.bind.JAXBPermission "setDatatypeConverter";
 
diff --git a/solr/licenses/bcpkix-jdk18on-1.77.jar.sha1 b/solr/licenses/bcpkix-jdk18on-1.77.jar.sha1
deleted file mode 100644
index 78f704d21a8..00000000000
--- a/solr/licenses/bcpkix-jdk18on-1.77.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-ed953791ba0229747dd0fd9911e3d76a462acfd3
diff --git a/solr/licenses/bcpkix-jdk18on-1.78.1.jar.sha1 b/solr/licenses/bcpkix-jdk18on-1.78.1.jar.sha1
new file mode 100644
index 00000000000..c2cbeb4f70e
--- /dev/null
+++ b/solr/licenses/bcpkix-jdk18on-1.78.1.jar.sha1
@@ -0,0 +1 @@
+17b3541f736df97465f87d9f5b5dfa4991b37bb3
diff --git a/solr/licenses/bcprov-jdk18on-1.77.jar.sha1 b/solr/licenses/bcprov-jdk18on-1.77.jar.sha1
deleted file mode 100644
index 72d478f021a..00000000000
--- a/solr/licenses/bcprov-jdk18on-1.77.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-2cc971b6c20949c1ff98d1a4bc741ee848a09523
diff --git a/solr/licenses/bcprov-jdk18on-1.78.1.jar.sha1 b/solr/licenses/bcprov-jdk18on-1.78.1.jar.sha1
new file mode 100644
index 00000000000..9e07e9f1e29
--- /dev/null
+++ b/solr/licenses/bcprov-jdk18on-1.78.1.jar.sha1
@@ -0,0 +1 @@
+39e9e45359e20998eb79c1828751f94a818d25f8
diff --git a/solr/licenses/bcutil-jdk18on-1.77.jar.sha1 b/solr/licenses/bcutil-jdk18on-1.77.jar.sha1
deleted file mode 100644
index 003ab86c340..00000000000
--- a/solr/licenses/bcutil-jdk18on-1.77.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-de3eaef351545fe8562cf29ddff4a403a45b49b7
diff --git a/solr/licenses/bcutil-jdk18on-1.78.1.jar.sha1 b/solr/licenses/bcutil-jdk18on-1.78.1.jar.sha1
new file mode 100644
index 00000000000..d9347e30964
--- /dev/null
+++ b/solr/licenses/bcutil-jdk18on-1.78.1.jar.sha1
@@ -0,0 +1 @@
+5353ca39fe2f148dab9ca1d637a43d0750456254
diff --git a/solr/server/etc/security.policy b/solr/server/etc/security.policy
index f207380fdfb..c898ac8dbfe 100644
--- a/solr/server/etc/security.policy
+++ b/solr/server/etc/security.policy
@@ -147,6 +147,7 @@ grant {
 
   // Needed by JWT integration tests & S3 clients
   permission java.lang.RuntimePermission "setFactory";
+  permission java.security.SecurityPermission "getProperty.org.bouncycastle.pkcs12.default";
 
   permission javax.xml.bind.JAXBPermission "setDatatypeConverter";
 
diff --git a/versions.lock b/versions.lock
index e42dc41947f..31bd7ce542c 100644
--- a/versions.lock
+++ b/versions.lock
@@ -429,9 +429,9 @@ org.apache.kerby:kerb-identity:1.0.1 (1 constraints: 5f0cb602)
 org.apache.kerby:kerb-server:1.0.1 (1 constraints: d10b65f2)
 org.apache.kerby:kerb-simplekdc:1.0.1 (1 constraints: dc0d7e3e)
 org.apache.tomcat.embed:tomcat-embed-el:9.0.76 (1 constraints: d41558cf)
-org.bouncycastle:bcpkix-jdk18on:1.77 (1 constraints: e3040431)
-org.bouncycastle:bcprov-jdk18on:1.77 (2 constraints: c51a825c)
-org.bouncycastle:bcutil-jdk18on:1.77 (1 constraints: 620d2d29)
+org.bouncycastle:bcpkix-jdk18on:1.78.1 (1 constraints: 43055a3b)
+org.bouncycastle:bcprov-jdk18on:1.78.1 (2 constraints: 851b50bd)
+org.bouncycastle:bcutil-jdk18on:1.78.1 (1 constraints: c20d8144)
 org.freemarker:freemarker:2.3.32 (1 constraints: f00e9371)
 org.hdrhistogram:HdrHistogram:2.1.12 (1 constraints: 520d2029)
 org.hsqldb:hsqldb:2.7.2 (1 constraints: 0d050c36)
diff --git a/versions.props b/versions.props
index e00c760789e..613ca4ec238 100644
--- a/versions.props
+++ b/versions.props
@@ -53,7 +53,7 @@ org.apache.tika:*=1.28.5
 org.apache.tomcat:annotations-api=6.0.53
 org.apache.zookeeper:*=3.9.2
 org.bitbucket.b_c:jose4j=0.9.6
-org.bouncycastle:bcpkix-jdk18on=1.77
+org.bouncycastle:bcpkix-jdk18on=1.78.1
 org.carrot2:carrot2-core=4.5.1
 org.codehaus.woodstox:stax2-api=4.2.2
 org.eclipse.jetty*:*=10.0.22