diff --git a/dependencies.Dockerfile b/dependencies.Dockerfile
index 3588982f9..0c7db5f2f 100644
--- a/dependencies.Dockerfile
+++ b/dependencies.Dockerfile
@@ -6,7 +6,7 @@
 FROM otel/weaver:v0.14.0@sha256:bea89bc5544ad760db2fd906c5285c2a3769c61fb04f660f9c31e7e44f11804b AS weaver
 
 # OPA is used to test policies enforced by weaver.
-FROM openpolicyagent/opa:1.3.0@sha256:e02dc1957f7a4195f0724762269dfe3309f13344629e0c926316a7cf72233af5 AS opa
+FROM openpolicyagent/opa:1.4.2@sha256:35a093d9ae828373cf88f68ecaa8189ab26287468074a3b78f0601d9c8b7a4f5 AS opa
 
 # Semconv gen is used for backwards compatibility checks.
 # TODO(jsuereth): Remove this when no longer used.