diff --git a/lib/build.gradle.kts b/lib/build.gradle.kts
index dcccb11..8284977 100644
--- a/lib/build.gradle.kts
+++ b/lib/build.gradle.kts
@@ -15,15 +15,15 @@ repositories {
 }
 
 dependencies {
-    compileOnly("com.pi4j:pi4j-core:2.3.0")
-    testImplementation("com.pi4j:pi4j-core:2.3.0")
-    compileOnly("com.pi4j:pi4j-plugin-mock:2.3.0")
-    testImplementation("com.pi4j:pi4j-plugin-mock:2.3.0")
-    compileOnly("org.slf4j:slf4j-api:1.7.32")
-    testImplementation("org.slf4j:slf4j-api:1.7.32")
-    compileOnly("org.slf4j:slf4j-simple:1.7.32")
+    compileOnly("com.pi4j:pi4j-core:2.6.0")
+    testImplementation("com.pi4j:pi4j-core:2.6.0")
+    compileOnly("com.pi4j:pi4j-plugin-mock:2.6.0")
+    testImplementation("com.pi4j:pi4j-plugin-mock:2.6.0")
+    compileOnly("org.slf4j:slf4j-api:2.0.12")
+    testImplementation("org.slf4j:slf4j-api:2.0.12")
+    compileOnly("org.slf4j:slf4j-simple:2.0.12")
+    testImplementation("org.slf4j:slf4j-simple:2.0.12")
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.4")
-    testImplementation("org.slf4j:slf4j-simple:1.7.32")
     testImplementation(kotlin("test"))
 }