diff --git a/build.gradle b/build.gradle
index 134caf0..1e2feb6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -31,13 +31,13 @@
 
 dependencies {
   errorprone 'com.google.errorprone:error_prone_core:2.36.0'
-  errorprone 'com.uber.nullaway:nullaway:0.12.1'
+  errorprone 'com.uber.nullaway:nullaway:0.12.2'
   
-  compileOnly 'com.google.code.findbugs:jsr305:3.0.2'
+  compileOnly 'org.jspecify:jspecify:1.0.0'
 
   api 'io.vavr:vavr:0.10.5'
 
-  testImplementation 'org.junit.jupiter:junit-jupiter:5.11.3'
+  testImplementation 'org.junit.jupiter:junit-jupiter:5.11.4'
   testImplementation("org.mockito:mockito-core:5.14.2")
   testImplementation("org.mockito:mockito-junit-jupiter:5.14.2")
 }
diff --git a/src/main/java/com/github/tonivade/vavr/effect/CallStack.java b/src/main/java/com/github/tonivade/vavr/effect/CallStack.java
index ea68b7e..1ae7ddf 100644
--- a/src/main/java/com/github/tonivade/vavr/effect/CallStack.java
+++ b/src/main/java/com/github/tonivade/vavr/effect/CallStack.java
@@ -4,7 +4,7 @@
  */
 package com.github.tonivade.vavr.effect;
 
-import javax.annotation.Nullable;
+import org.jspecify.annotations.Nullable;
 
 import io.vavr.PartialFunction;
 import io.vavr.control.Option;
diff --git a/src/main/java/com/github/tonivade/vavr/effect/StackItem.java b/src/main/java/com/github/tonivade/vavr/effect/StackItem.java
index 05456e7..cbeb865 100644
--- a/src/main/java/com/github/tonivade/vavr/effect/StackItem.java
+++ b/src/main/java/com/github/tonivade/vavr/effect/StackItem.java
@@ -7,7 +7,7 @@
 import java.util.ArrayDeque;
 import java.util.Deque;
 
-import javax.annotation.Nullable;
+import org.jspecify.annotations.Nullable;
 
 import io.vavr.PartialFunction;
 import io.vavr.control.Option;