diff --git a/14-observability/observability-models-mistral-ai/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java b/14-observability/observability-models-mistral-ai/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java
index dd69f07..84613d3 100644
--- a/14-observability/observability-models-mistral-ai/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java
+++ b/14-observability/observability-models-mistral-ai/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java
@@ -18,7 +18,7 @@ class TestcontainersConfiguration {
     @Scope("singleton")
     @ServiceConnection("otel/opentelemetry-collector-contrib")
     GenericContainer<?> lgtmContainer() {
-        return new GenericContainer<>("docker.io/grafana/otel-lgtm:0.7.3")
+        return new GenericContainer<>("docker.io/grafana/otel-lgtm:0.7.4")
                 .withExposedPorts(3000, 4317, 4318)
                 .withEnv("OTEL_METRIC_EXPORT_INTERVAL", "500")
                 .waitingFor(Wait.forLogMessage(".*The OpenTelemetry collector and the Grafana LGTM stack are up and running.*\\s", 1))
diff --git a/14-observability/observability-models-ollama/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java b/14-observability/observability-models-ollama/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java
index dd69f07..84613d3 100644
--- a/14-observability/observability-models-ollama/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java
+++ b/14-observability/observability-models-ollama/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java
@@ -18,7 +18,7 @@ class TestcontainersConfiguration {
     @Scope("singleton")
     @ServiceConnection("otel/opentelemetry-collector-contrib")
     GenericContainer<?> lgtmContainer() {
-        return new GenericContainer<>("docker.io/grafana/otel-lgtm:0.7.3")
+        return new GenericContainer<>("docker.io/grafana/otel-lgtm:0.7.4")
                 .withExposedPorts(3000, 4317, 4318)
                 .withEnv("OTEL_METRIC_EXPORT_INTERVAL", "500")
                 .waitingFor(Wait.forLogMessage(".*The OpenTelemetry collector and the Grafana LGTM stack are up and running.*\\s", 1))
diff --git a/14-observability/observability-models-openai/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java b/14-observability/observability-models-openai/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java
index dd69f07..84613d3 100644
--- a/14-observability/observability-models-openai/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java
+++ b/14-observability/observability-models-openai/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java
@@ -18,7 +18,7 @@ class TestcontainersConfiguration {
     @Scope("singleton")
     @ServiceConnection("otel/opentelemetry-collector-contrib")
     GenericContainer<?> lgtmContainer() {
-        return new GenericContainer<>("docker.io/grafana/otel-lgtm:0.7.3")
+        return new GenericContainer<>("docker.io/grafana/otel-lgtm:0.7.4")
                 .withExposedPorts(3000, 4317, 4318)
                 .withEnv("OTEL_METRIC_EXPORT_INTERVAL", "500")
                 .waitingFor(Wait.forLogMessage(".*The OpenTelemetry collector and the Grafana LGTM stack are up and running.*\\s", 1))
diff --git a/14-observability/observability-vector-stores-pgvector/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java b/14-observability/observability-vector-stores-pgvector/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java
index daaba1e..881c356 100644
--- a/14-observability/observability-vector-stores-pgvector/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java
+++ b/14-observability/observability-vector-stores-pgvector/src/test/java/com/thomasvitale/ai/spring/TestcontainersConfiguration.java
@@ -27,7 +27,7 @@ PostgreSQLContainer<?> pgvectorContainer() {
     @Scope("singleton")
     @ServiceConnection("otel/opentelemetry-collector-contrib")
     GenericContainer<?> lgtmContainer() {
-        return new GenericContainer<>("docker.io/grafana/otel-lgtm:0.7.3")
+        return new GenericContainer<>("docker.io/grafana/otel-lgtm:0.7.4")
                 .withExposedPorts(3000, 4317, 4318)
                 .withEnv("OTEL_METRIC_EXPORT_INTERVAL", "500")
                 .waitingFor(Wait.forLogMessage(".*The OpenTelemetry collector and the Grafana LGTM stack are up and running.*\\s", 1))