diff --git a/models/CSE6SSM/generate_semianalytic_points.cpp b/models/CSE6SSM/generate_semianalytic_points.cpp
index eef9f28..566e57d 100644
--- a/models/CSE6SSM/generate_semianalytic_points.cpp
+++ b/models/CSE6SSM/generate_semianalytic_points.cpp
@@ -14,6 +14,7 @@
 #include <iostream>
 #include <fstream>
 #include <chrono>
+#include <random>
 
 std::size_t seed = std::chrono::high_resolution_clock::now().time_since_epoch().count();
 
diff --git a/models/CSE6SSM/gridscan_CSE6SSM.cpp b/models/CSE6SSM/gridscan_CSE6SSM.cpp
index 91d33e2..ed554a9 100644
--- a/models/CSE6SSM/gridscan_CSE6SSM.cpp
+++ b/models/CSE6SSM/gridscan_CSE6SSM.cpp
@@ -18,6 +18,7 @@
 #include <iostream>
 #include <fstream>
 #include <chrono>
+#include <random>
 #include <sys/time.h>
 
 #include <boost/algorithm/string.hpp>
diff --git a/models/CSE6SSM/gridscan_semianalytic_CSE6SSM.cpp b/models/CSE6SSM/gridscan_semianalytic_CSE6SSM.cpp
index 199a65a..053f629 100644
--- a/models/CSE6SSM/gridscan_semianalytic_CSE6SSM.cpp
+++ b/models/CSE6SSM/gridscan_semianalytic_CSE6SSM.cpp
@@ -16,6 +16,7 @@
 #include <iostream>
 #include <fstream>
 #include <chrono>
+#include <random>
 #include <sys/time.h>
 
 std::size_t seed = std::chrono::high_resolution_clock::now().time_since_epoch().count();
diff --git a/models/MSSM/gridscan_semianalytic_CMSSM.cpp b/models/MSSM/gridscan_semianalytic_CMSSM.cpp
index 734c4bc..9d8307a 100644
--- a/models/MSSM/gridscan_semianalytic_CMSSM.cpp
+++ b/models/MSSM/gridscan_semianalytic_CMSSM.cpp
@@ -12,6 +12,7 @@
 #include <iostream>
 #include <fstream>
 #include <chrono>
+#include <random>
 #include <sys/time.h>
 
 std::size_t seed = std::chrono::high_resolution_clock::now().time_since_epoch().count();