diff --git a/opm/autodiff/FlowMain.hpp b/opm/autodiff/FlowMain.hpp
index 6badbc4b6..540bdd0c5 100644
--- a/opm/autodiff/FlowMain.hpp
+++ b/opm/autodiff/FlowMain.hpp
@@ -313,7 +313,7 @@ namespace Opm
                 std::cout << "*                                                                    *\n";
                 std::cout << "* Flow is a simulator for fully implicit three-phase black-oil flow, *\n";
                 std::cout << "*            and is part of OPM. For more information see:           *\n";
-                std::cout << "*                       http://opm-project.org                       *\n";
+                std::cout << "*                       https://opm-project.org                       *\n";
                 std::cout << "*                                                                    *\n";
                 std::cout << "**********************************************************************\n\n";
             }
diff --git a/opm/autodiff/FlowMainEbos.hpp b/opm/autodiff/FlowMainEbos.hpp
index de9ba82dc..54cc78799 100755
--- a/opm/autodiff/FlowMainEbos.hpp
+++ b/opm/autodiff/FlowMainEbos.hpp
@@ -189,7 +189,7 @@ namespace Opm
                 std::cout << "*                                                                    *\n";
                 std::cout << "* Flow is a simulator for fully implicit three-phase black-oil flow, *\n";
                 std::cout << "*             including solvent and polymer capabilities.            *\n";
-                std::cout << "*          For more information, see http://opm-project.org          *\n";
+                std::cout << "*          For more information, see https://opm-project.org          *\n";
                 std::cout << "*                                                                    *\n";
                 std::cout << "**********************************************************************\n\n";
             }
@@ -347,7 +347,7 @@ namespace Opm
               ss << " #         #         #      #     # # # #   \n";
               ss << " #         #######    ######       #   #    \n\n";
               ss << "Flow is a simulator for fully implicit three-phase black-oil flow,";
-              ss << " and is part of OPM.\nFor more information visit: http://opm-project.org \n\n";
+              ss << " and is part of OPM.\nFor more information visit: https://opm-project.org \n\n";
               ss << "Flow Version  =  " + version + "\n";
               if (uname(&arch) == 0) {
                  ss << "System        =  " << arch.nodename << " (Number of cores: " << num_cpu;
diff --git a/opm/autodiff/FlowMainSequential.hpp b/opm/autodiff/FlowMainSequential.hpp
index 8b58afe6a..962e9f910 100644
--- a/opm/autodiff/FlowMainSequential.hpp
+++ b/opm/autodiff/FlowMainSequential.hpp
@@ -58,7 +58,7 @@ namespace Opm
                 std::cout << "*                                                                    *\n";
                 std::cout << "*    Flow-Sequential is a simulator for fully implicit three-phase,  *\n";
                 std::cout << "*                  black-oil flow, and is part of OPM.               *\n";
-                std::cout << "*           For more information see http://opm-project.org          *\n";
+                std::cout << "*           For more information see https://opm-project.org          *\n";
                 std::cout << "*                                                                    *\n";
                 std::cout << "**********************************************************************\n\n";