diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index ba622404..6137811d 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -45,12 +45,12 @@ if (UNIX)
     IXDNSLookupTest.cpp
     cmd_websocket_chat.cpp
     IXWebSocketCloseTest.cpp
+    IXWebSocketPingTest.cpp
+    IXWebSocketPingTimeoutTest.cpp
   )
 endif()
 
 # Disable tests for now that are failing or not reliable
-# IXWebSocketPingTest.cpp
-# IXWebSocketPingTimeoutTest.cpp
 # IXWebSocketMessageQTest.cpp (trigger a segfault on Linux)
 
 add_executable(ixwebsocket_unittest ${SOURCES})
diff --git a/test/IXWebSocketPingTest.cpp b/test/IXWebSocketPingTest.cpp
index cfcfabdd..4ddd2e2f 100644
--- a/test/IXWebSocketPingTest.cpp
+++ b/test/IXWebSocketPingTest.cpp
@@ -225,8 +225,8 @@ TEST_CASE("Websocket_ping_no_data_sent_setPingInterval", "[setPingInterval]")
         // -> expected ping messages == 2 as 2100 seconds, 1 ping sent every second
         REQUIRE(serverReceivedPingMessages == 2);
 
-        // Give us 500ms for the server to notice that clients went away
-        ix::msleep(500);
+        // Give us 1000ms for the server to notice that clients went away
+        ix::msleep(1000);
         REQUIRE(server.getClients().size() == 0);
 
         ix::reportWebSocketTraffic();
@@ -272,8 +272,8 @@ TEST_CASE("Websocket_ping_data_sent_setPingInterval", "[setPingInterval]")
         // -> expected ping messages == 3 as 900+900+1300 = 3100 seconds, 1 ping sent every second
         REQUIRE(serverReceivedPingMessages == 3);
 
-        // Give us 500ms for the server to notice that clients went away
-        ix::msleep(500);
+        // Give us 1000ms for the server to notice that clients went away
+        ix::msleep(1000);
         REQUIRE(server.getClients().size() == 0);
 
         ix::reportWebSocketTraffic();
@@ -325,8 +325,8 @@ TEST_CASE("Websocket_ping_data_sent_setPingInterval_half_full", "[setPingInterva
 
         webSocketClient.stop();
 
-        // Give us 500ms for the server to notice that clients went away
-        ix::msleep(500);
+        // Give us 1000ms for the server to notice that clients went away
+        ix::msleep(1000);
         REQUIRE(server.getClients().size() == 0);
 
         ix::reportWebSocketTraffic();
@@ -377,8 +377,8 @@ TEST_CASE("Websocket_ping_data_sent_setPingInterval_full", "[setPingInterval]")
 
         webSocketClient.stop();
 
-        // Give us 500ms for the server to notice that clients went away
-        ix::msleep(500);
+        // Give us 1000ms for the server to notice that clients went away
+        ix::msleep(1000);
         REQUIRE(server.getClients().size() == 0);
 
         ix::reportWebSocketTraffic();
@@ -422,8 +422,8 @@ TEST_CASE("Websocket_ping_no_data_sent_setHeartBeatPeriod", "[setHeartBeatPeriod
         // -> expected ping messages == 1 as 1900 seconds, 1 ping sent every second
         REQUIRE(serverReceivedPingMessages == 1);
 
-        // Give us 500ms for the server to notice that clients went away
-        ix::msleep(500);
+        // Give us 1000ms for the server to notice that clients went away
+        ix::msleep(1000);
         REQUIRE(server.getClients().size() == 0);
 
         ix::reportWebSocketTraffic();
@@ -472,8 +472,8 @@ TEST_CASE("Websocket_ping_data_sent_setHeartBeatPeriod", "[setHeartBeatPeriod]")
         // -> expected ping messages == 2 as 900+900+1100 = 2900 seconds, 1 ping sent every second
         REQUIRE(serverReceivedPingMessages == 2);
 
-        // Give us 500ms for the server to notice that clients went away
-        ix::msleep(500);
+        // Give us 1000ms for the server to notice that clients went away
+        ix::msleep(1000);
         REQUIRE(server.getClients().size() == 0);
 
         ix::reportWebSocketTraffic();
diff --git a/test/IXWebSocketPingTimeoutTest.cpp b/test/IXWebSocketPingTimeoutTest.cpp
index 0b449427..2da16c91 100644
--- a/test/IXWebSocketPingTimeoutTest.cpp
+++ b/test/IXWebSocketPingTimeoutTest.cpp
@@ -259,8 +259,8 @@ TEST_CASE("Websocket_ping_timeout_not_checked", "[setPingTimeout]")
 
         webSocketClient.stop();
 
-        // Give us 500ms for the server to notice that clients went away
-        ix::msleep(500);
+        // Give us 1000ms for the server to notice that clients went away
+        ix::msleep(1000);
         REQUIRE(server.getClients().size() == 0);
 
         // Ensure client close was not by ping timeout
@@ -298,7 +298,7 @@ TEST_CASE("Websocket_ping_no_timeout", "[setPingTimeout]")
 
         REQUIRE(server.getClients().size() == 1);
 
-        ix::msleep(1100);
+        ix::msleep(1200);
 
         // Here we test ping timeout, no timeout
         REQUIRE(serverReceivedPingMessages == 1);
@@ -312,8 +312,8 @@ TEST_CASE("Websocket_ping_no_timeout", "[setPingTimeout]")
 
         webSocketClient.stop();
 
-        // Give us 500ms for the server to notice that clients went away
-        ix::msleep(500);
+        // Give us 1000ms for the server to notice that clients went away
+        ix::msleep(1000);
         REQUIRE(server.getClients().size() == 0);
 
         // Ensure client close was not by ping timeout
@@ -365,7 +365,7 @@ TEST_CASE("Websocket_no_ping_but_timeout", "[setPingTimeout]")
         REQUIRE(serverReceivedPingMessages == 0);
         REQUIRE(webSocketClient.getReceivedPongMessages() == 0);
         // Ensure client close was by ping timeout
-        ix::msleep(300);
+        ix::msleep(1000);
         REQUIRE(webSocketClient.isClosed() == true);
         REQUIRE(webSocketClient.closedDueToPingTimeout() == true);
 
@@ -417,7 +417,7 @@ TEST_CASE("Websocket_ping_timeout", "[setPingTimeout]")
         REQUIRE(serverReceivedPingMessages == 1);
         REQUIRE(webSocketClient.getReceivedPongMessages() == 0);
         // Ensure client close was by ping timeout
-        ix::msleep(300);
+        ix::msleep(1000);
         REQUIRE(webSocketClient.isClosed() == true);
         REQUIRE(webSocketClient.closedDueToPingTimeout() == true);
 
@@ -429,7 +429,6 @@ TEST_CASE("Websocket_ping_timeout", "[setPingTimeout]")
     }
 }
 
-#if 0 // this test fails on travis / commenting it out for now to get back to a green travis state
 TEST_CASE("Websocket_ping_long_timeout", "[setPingTimeout]")
 {
     SECTION("Make sure that ping messages don't have responses (no PONG).")
@@ -458,7 +457,7 @@ TEST_CASE("Websocket_ping_long_timeout", "[setPingTimeout]")
 
         REQUIRE(server.getClients().size() == 1);
 
-        ix::msleep(5900);
+        ix::msleep(5800);
 
         // Here we test ping timeout, no timeout yet (2 ping sent at 2s and 4s)
         REQUIRE(serverReceivedPingMessages == 2);
@@ -468,7 +467,7 @@ TEST_CASE("Websocket_ping_long_timeout", "[setPingTimeout]")
         REQUIRE(webSocketClient.isClosed() == false);
         REQUIRE(webSocketClient.closedDueToPingTimeout() == false);
 
-        ix::msleep(200);
+        ix::msleep(600);
 
         // Here we test ping timeout, timeout (at 6 seconds)
         REQUIRE(serverReceivedPingMessages == 2);
@@ -484,4 +483,3 @@ TEST_CASE("Websocket_ping_long_timeout", "[setPingTimeout]")
         ix::reportWebSocketTraffic();
     }
 }
-#endif