diff --git a/rdfc-core/build.gradle.kts b/rdfc-core/build.gradle.kts
index b1f25ec..bfc9739 100644
--- a/rdfc-core/build.gradle.kts
+++ b/rdfc-core/build.gradle.kts
@@ -5,7 +5,7 @@ kotlin { jvmToolchain(jdkVersion.toInt()) }
 
 dependencies {
   // HTTP dependency
-  implementation("io.ktor:ktor-client-core:2.3.10")
+  implementation("io.ktor:ktor-client-core:3.0.3")
 
   // Kotlin extensions
   implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.8.0")
diff --git a/rdfc-intermediate/build.gradle.kts b/rdfc-intermediate/build.gradle.kts
index 85bcb25..d273aa7 100644
--- a/rdfc-intermediate/build.gradle.kts
+++ b/rdfc-intermediate/build.gradle.kts
@@ -8,7 +8,7 @@ dependencies {
   implementation(project(":rdfc-core"))
 
   // URL encoding
-  implementation("io.ktor:ktor-client-core:2.3.10")
+  implementation("io.ktor:ktor-client-core:3.0.3")
 
   // KTest
   testImplementation(kotlin("test"))
diff --git a/rdfc-orchestrator/build.gradle.kts b/rdfc-orchestrator/build.gradle.kts
index 47b5588..4ccd9e2 100644
--- a/rdfc-orchestrator/build.gradle.kts
+++ b/rdfc-orchestrator/build.gradle.kts
@@ -23,7 +23,7 @@ dependencies {
   implementation("com.google.protobuf:protobuf-kotlin:4.27.1")
 
   // HTTP dependencies
-  implementation("io.ktor:ktor-client-core:2.3.10")
+  implementation("io.ktor:ktor-client-core:3.0.3")
   implementation("io.ktor:ktor-client-cio:2.3.10")
   implementation("io.ktor:ktor-server-core:2.3.10")
   implementation("io.ktor:ktor-server-netty:2.3.10")
diff --git a/rdfc-parser/build.gradle.kts b/rdfc-parser/build.gradle.kts
index dc4cbe3..8b3f1df 100644
--- a/rdfc-parser/build.gradle.kts
+++ b/rdfc-parser/build.gradle.kts
@@ -14,7 +14,7 @@ dependencies {
   implementation("org.apache.jena:jena-shacl:5.0.0")
 
   // URL encoding
-  implementation("io.ktor:ktor-client-core:2.3.10")
+  implementation("io.ktor:ktor-client-core:3.0.3")
 
   // KTest
   testImplementation(kotlin("test"))