diff --git a/src/version.cpp b/src/version.cpp
index 7e8c0b98ad..6040744375 100644
--- a/src/version.cpp
+++ b/src/version.cpp
@@ -18,7 +18,6 @@
 // + standard includes
 #include <array>
 #include <fstream>
-#include <regex>
 #include <set>
 
 // #1147