diff --git a/.travis.yml b/.travis.yml
index b9f7c27..603f12d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -42,6 +42,10 @@ matrix:
     - os: linux
       env: ZMQ_VERSION=4.2.0 BUILD_TYPE=pkgconfig
 
+    # GCC default, draft disabled, latest 4.2.x libzmq (defined in ci_build.sh)
+    - os: linux
+      env: ZMQ_VERSION=4.2.5
+
     # GCC default, draft disabled, default libzmq (defined in ci_build.sh)
     - os: linux
 
diff --git a/README.md b/README.md
index 32191eb..9d3c253 100644
--- a/README.md
+++ b/README.md
@@ -23,9 +23,10 @@ Supported platforms
 ===================
 
  - Only a subset of the platforms that are supported by libzmq itself are supported. Some features already require a compiler supporting C++11. In the future, probably all features will require C++11. To build and run the tests, CMake and Catch are required.
- - Tested libzmq versions are
+ - Any libzmq 4.x version is expected to work. DRAFT features may only work for the most recent tested version. Currently explicitly tested libzmq versions are
    - 4.2.0 (without DRAFT API)
-   - 4.2.5 (with and without DRAFT API)
+   - 4.2.5 (without DRAFT API)
+   - 4.3.1 (with and without DRAFT API)
  - Platforms with full support (i.e. CI executing build and tests)
    - Ubuntu 14.04 x64 (with gcc 4.8.4) (without DRAFT API only)
    - Ubuntu 14.04 x64 (with gcc 7.3.0)
diff --git a/ci_build.sh b/ci_build.sh
index c900f57..e2beb49 100755
--- a/ci_build.sh
+++ b/ci_build.sh
@@ -4,7 +4,7 @@ set -x
 set -e
 
 BUILD_TYPE=${BUILD_TYPE:-cmake}
-ZMQ_VERSION=${ZMQ_VERSION:-4.2.5}
+ZMQ_VERSION=${ZMQ_VERSION:-4.3.1}
 ENABLE_DRAFTS=${ENABLE_DRAFTS:-OFF}
 COVERAGE=${COVERAGE:-OFF}
 LIBZMQ=${PWD}/libzmq-build
diff --git a/tests/active_poller.cpp b/tests/active_poller.cpp
index 2e921bb..96a76a1 100644
--- a/tests/active_poller.cpp
+++ b/tests/active_poller.cpp
@@ -83,20 +83,20 @@ TEST_CASE("add handler", "[active_poller]")
     CHECK_NOTHROW(active_poller.add(socket, ZMQ_POLLIN, handler));
 }
 
+#if ZMQ_VERSION >= ZMQ_MAKE_VERSION(4, 3, 0)
+// this behaviour was added by https://github.com/zeromq/libzmq/pull/3100
 TEST_CASE("add handler invalid events type", "[active_poller]")
 {
-    /// \todo is it good that this is accepted? should probably already be
-    ///   checked by zmq_poller_add/modify in libzmq:
-    ///   https://github.com/zeromq/libzmq/issues/3088
     zmq::context_t context;
     zmq::socket_t socket{context, zmq::socket_type::router};
     zmq::active_poller_t active_poller;
     zmq::active_poller_t::handler_t handler;
     short invalid_events_type = 2 << 10;
-    CHECK_NOTHROW(active_poller.add(socket, invalid_events_type, handler));
-    CHECK_FALSE(active_poller.empty());
-    CHECK(1u == active_poller.size());
+    CHECK_THROWS_AS(active_poller.add(socket, invalid_events_type, handler), zmq::error_t);
+    CHECK(active_poller.empty());
+    CHECK(0u == active_poller.size());
 }
+#endif
 
 TEST_CASE("add handler twice throws", "[active_poller]")
 {
diff --git a/tests/poller.cpp b/tests/poller.cpp
index a42fd66..47689b3 100644
--- a/tests/poller.cpp
+++ b/tests/poller.cpp
@@ -66,17 +66,17 @@ TEST_CASE("poller add non nullptr", "[poller]")
     CHECK_NOTHROW(poller.add(socket, ZMQ_POLLIN, &i));
 }
 
+#if ZMQ_VERSION >= ZMQ_MAKE_VERSION(4, 3, 0)
+// this behaviour was added by https://github.com/zeromq/libzmq/pull/3100
 TEST_CASE("poller add handler invalid events type", "[poller]")
 {
-    /// \todo is it good that this is accepted? should probably already be
-    ///   checked by zmq_poller_add/modify in libzmq:
-    ///   https://github.com/zeromq/libzmq/issues/3088
     zmq::context_t context;
     zmq::socket_t socket{context, zmq::socket_type::router};
     zmq::poller_t<> poller;
     short invalid_events_type = 2 << 10;
-    CHECK_NOTHROW(poller.add(socket, invalid_events_type, nullptr));
+    CHECK_THROWS_AS(poller.add(socket, invalid_events_type, nullptr), zmq::error_t);
 }
+#endif
 
 TEST_CASE("poller add handler twice throws", "[poller]")
 {