diff --git a/build.gradle.kts b/build.gradle.kts
index c341a92..30c31c8 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -11,9 +11,9 @@ buildscript {
             // Avoid https://github.com/advisories/GHSA-j288-q9x7-2f5v
             classpath("org.apache.commons:commons-lang3:3.20.0")
             // Avoid https://github.com/advisories/GHSA-wg6q-6289-32hp
-            classpath("org.bouncycastle:bcpkix-jdk18on:1.85")
-            classpath("org.bouncycastle:bcprov-jdk18on:1.85")
-            classpath("org.bouncycastle:bcutil-jdk18on:1.85")
+            classpath("org.bouncycastle:bcpkix-jdk18on:1.86")
+            classpath("org.bouncycastle:bcprov-jdk18on:1.86")
+            classpath("org.bouncycastle:bcutil-jdk18on:1.86")
         }
     }
 }
diff --git a/divviup/build.gradle.kts b/divviup/build.gradle.kts
index 5a47330..445b1ec 100644
--- a/divviup/build.gradle.kts
+++ b/divviup/build.gradle.kts
@@ -84,12 +84,12 @@ dependencies {
         // Avoid https://github.com/advisories/GHSA-j288-q9x7-2f5v
         api("org.apache.commons:commons-lang3:3.20.0")
         // Avoid https://github.com/advisories/GHSA-wg6q-6289-32hp
-        api("org.bouncycastle:bcpkix-jdk18on:1.85")
-        api("org.bouncycastle:bcprov-jdk18on:1.85")
-        api("org.bouncycastle:bcutil-jdk18on:1.85")
-        androidLintTool("org.bouncycastle:bcpkix-jdk18on:1.85")
-        androidLintTool("org.bouncycastle:bcprov-jdk18on:1.85")
-        androidLintTool("org.bouncycastle:bcutil-jdk18on:1.85")
+        api("org.bouncycastle:bcpkix-jdk18on:1.86")
+        api("org.bouncycastle:bcprov-jdk18on:1.86")
+        api("org.bouncycastle:bcutil-jdk18on:1.86")
+        androidLintTool("org.bouncycastle:bcpkix-jdk18on:1.86")
+        androidLintTool("org.bouncycastle:bcprov-jdk18on:1.86")
+        androidLintTool("org.bouncycastle:bcutil-jdk18on:1.86")
     }
 }
 
diff --git a/divviup/commontest/build.gradle.kts b/divviup/commontest/build.gradle.kts
index 49b1dfd..125629f 100644
--- a/divviup/commontest/build.gradle.kts
+++ b/divviup/commontest/build.gradle.kts
@@ -36,11 +36,11 @@ dependencies {
         // Avoid https://github.com/advisories/GHSA-j288-q9x7-2f5v
         api("org.apache.commons:commons-lang3:3.20.0")
         // Avoid https://github.com/advisories/GHSA-wg6q-6289-32hp
-        api("org.bouncycastle:bcpkix-jdk18on:1.85")
-        api("org.bouncycastle:bcprov-jdk18on:1.85")
-        api("org.bouncycastle:bcutil-jdk18on:1.85")
-        androidLintTool("org.bouncycastle:bcpkix-jdk18on:1.85")
-        androidLintTool("org.bouncycastle:bcprov-jdk18on:1.85")
-        androidLintTool("org.bouncycastle:bcutil-jdk18on:1.85")
+        api("org.bouncycastle:bcpkix-jdk18on:1.86")
+        api("org.bouncycastle:bcprov-jdk18on:1.86")
+        api("org.bouncycastle:bcutil-jdk18on:1.86")
+        androidLintTool("org.bouncycastle:bcpkix-jdk18on:1.86")
+        androidLintTool("org.bouncycastle:bcprov-jdk18on:1.86")
+        androidLintTool("org.bouncycastle:bcutil-jdk18on:1.86")
     }
 }
diff --git a/sampleapp/build.gradle.kts b/sampleapp/build.gradle.kts
index fe12737..bc15ccc 100644
--- a/sampleapp/build.gradle.kts
+++ b/sampleapp/build.gradle.kts
@@ -47,11 +47,11 @@ dependencies {
         // Avoid https://github.com/advisories/GHSA-j288-q9x7-2f5v
         api("org.apache.commons:commons-lang3:3.20.0")
         // Avoid https://github.com/advisories/GHSA-wg6q-6289-32hp
-        api("org.bouncycastle:bcpkix-jdk18on:1.85")
-        api("org.bouncycastle:bcprov-jdk18on:1.85")
-        api("org.bouncycastle:bcutil-jdk18on:1.85")
-        androidLintTool("org.bouncycastle:bcpkix-jdk18on:1.85")
-        androidLintTool("org.bouncycastle:bcprov-jdk18on:1.85")
-        androidLintTool("org.bouncycastle:bcutil-jdk18on:1.85")
+        api("org.bouncycastle:bcpkix-jdk18on:1.86")
+        api("org.bouncycastle:bcprov-jdk18on:1.86")
+        api("org.bouncycastle:bcutil-jdk18on:1.86")
+        androidLintTool("org.bouncycastle:bcpkix-jdk18on:1.86")
+        androidLintTool("org.bouncycastle:bcprov-jdk18on:1.86")
+        androidLintTool("org.bouncycastle:bcutil-jdk18on:1.86")
     }
 }