diff --git a/lib/lorina/lorina/aiger.hpp b/lib/lorina/lorina/aiger.hpp
index 2d0019d0f..c7b60c9d3 100644
--- a/lib/lorina/lorina/aiger.hpp
+++ b/lib/lorina/lorina/aiger.hpp
@@ -427,15 +427,15 @@ class ascii_aiger_pretty_printer : public aiger_reader
 
 namespace aig_regex
 {
-static std::regex header( R"(^aig (\d+) (\d+) (\d+) (\d+) (\d+)( \d+)?( \d+)?( \d+)?( \d+)?$)" );
-static std::regex ascii_header( R"(^aag (\d+) (\d+) (\d+) (\d+) (\d+)( \d+)?( \d+)?( \d+)?( \d+)?$)" );
-static std::regex input( R"(^i(\d+) (.*)$)" );
-static std::regex latch( R"(^l(\d+) (.*)$)" );
-static std::regex output( R"(^o(\d+) (.*)$)" );
-static std::regex bad_state( R"(^b(\d+) (.*)$)" );
-static std::regex constraint( R"(^c(\d+) (.*)$)" );
-static std::regex justice( R"(^j(\d+) (.*)$)" );
-static std::regex fairness( R"(^f(\d+) (.*)$)" );
+inline const std::regex header( R"(^aig (\d+) (\d+) (\d+) (\d+) (\d+)( \d+)?( \d+)?( \d+)?( \d+)?$)" );
+inline const std::regex ascii_header( R"(^aag (\d+) (\d+) (\d+) (\d+) (\d+)( \d+)?( \d+)?( \d+)?( \d+)?$)" );
+inline const std::regex input( R"(^i(\d+) (.*)$)" );
+inline const std::regex latch( R"(^l(\d+) (.*)$)" );
+inline const std::regex output( R"(^o(\d+) (.*)$)" );
+inline const std::regex bad_state( R"(^b(\d+) (.*)$)" );
+inline const std::regex constraint( R"(^c(\d+) (.*)$)" );
+inline const std::regex justice( R"(^j(\d+) (.*)$)" );
+inline const std::regex fairness( R"(^f(\d+) (.*)$)" );
 } // namespace aig_regex
 
 /*! \brief Reader function for ASCII AIGER format.
diff --git a/lib/lorina/lorina/bench.hpp b/lib/lorina/lorina/bench.hpp
index 7236e7d75..fff8e8834 100644
--- a/lib/lorina/lorina/bench.hpp
+++ b/lib/lorina/lorina/bench.hpp
@@ -155,12 +155,12 @@ class bench_pretty_printer : public bench_reader
 
 namespace bench_regex
 {
-static std::regex input( R"(INPUT\((.*)\))" );
-static std::regex output( R"(OUTPUT\((.*)\))" );
-static std::regex gate( R"((.*)\s+=\s+(.*)\((.*)\))" );
-static std::regex dff( R"((.*)\s+=\s+DFF\((.+)\))" );
-static std::regex lut( R"((.*)\s+=\s+LUT\s+(.*)\((.*)\))" );
-static std::regex gate_asgn( R"((.*)\s+=\s+(.*))" );
+inline const std::regex input( R"(INPUT\((.*)\))" );
+inline const std::regex output( R"(OUTPUT\((.*)\))" );
+inline const std::regex gate( R"((.*)\s+=\s+(.*)\((.*)\))" );
+inline const std::regex dff( R"((.*)\s+=\s+DFF\((.+)\))" );
+inline const std::regex lut( R"((.*)\s+=\s+LUT\s+(.*)\((.*)\))" );
+inline const std::regex gate_asgn( R"((.*)\s+=\s+(.*))" );
 } // namespace bench_regex
 
 /*! \brief Reader function for the BENCH format.
diff --git a/lib/lorina/lorina/blif.hpp b/lib/lorina/lorina/blif.hpp
index be4969547..fa403a7f8 100644
--- a/lib/lorina/lorina/blif.hpp
+++ b/lib/lorina/lorina/blif.hpp
@@ -258,10 +258,10 @@ class blif_pretty_printer : public blif_reader
 
 namespace blif_regex
 {
-static std::regex model( R"(.model\s+(.*))" );
-static std::regex names( R"(.names\s+(.*))" );
-static std::regex line_of_truthtable( R"(([01\-]*)\s*([01\-]))" );
-static std::regex end( R"(.end)" );
+inline const std::regex model( R"(.model\s+(.*))" );
+inline const std::regex names( R"(.names\s+(.*))" );
+inline const std::regex line_of_truthtable( R"(([01\-]*)\s*([01\-]))" );
+inline const std::regex end( R"(.end)" );
 } // namespace blif_regex
 
 /*! \brief Reader function for the BLIF format.
diff --git a/lib/lorina/lorina/dimacs.hpp b/lib/lorina/lorina/dimacs.hpp
index dc44b9a19..cf40c2ef6 100644
--- a/lib/lorina/lorina/dimacs.hpp
+++ b/lib/lorina/lorina/dimacs.hpp
@@ -98,8 +98,8 @@ class dimacs_reader
 
 namespace dimacs_regex
 {
-static std::regex problem_spec( R"(^p\s+([cd]nf)\s+([0-9]+)\s+([0-9]+)$)" );
-static std::regex clause( R"(((-?[1-9]+)+ +)+0)" );
+inline const std::regex problem_spec( R"(^p\s+([cd]nf)\s+([0-9]+)\s+([0-9]+)$)" );
+inline const std::regex clause( R"(((-?[1-9]+)+ +)+0)" );
 
 } // namespace dimacs_regex
 
diff --git a/lib/lorina/lorina/pla.hpp b/lib/lorina/lorina/pla.hpp
index c8a96565f..5cd89a66e 100644
--- a/lib/lorina/lorina/pla.hpp
+++ b/lib/lorina/lorina/pla.hpp
@@ -236,8 +236,8 @@ class pla_pretty_printer : public pla_reader
 
 namespace pla_regex
 {
-static std::regex keyword( R"(^\.([^\s]*)(?:\s+(.+))?$)" );
-static std::regex term( R"(^([01\-]+)\s+([01\-]+)$)" );
+inline const std::regex keyword( R"(^\.([^\s]*)(?:\s+(.+))?$)" );
+inline const std::regex term( R"(^([01\-]+)\s+([01\-]+)$)" );
 
 } // namespace pla_regex
 
diff --git a/lib/lorina/lorina/verilog_regex.hpp b/lib/lorina/lorina/verilog_regex.hpp
index 19347130d..b8f5e53c1 100644
--- a/lib/lorina/lorina/verilog_regex.hpp
+++ b/lib/lorina/lorina/verilog_regex.hpp
@@ -40,12 +40,12 @@ namespace lorina
 
 namespace verilog_regex
 {
-static std::regex immediate_assign( R"(^(~)?\(?([[:alnum:]\[\]_']+)\)?$)" );
-static std::regex binary_expression( R"(^(~)?([[:alnum:]\[\]_']+)([&|^])(~)?([[:alnum:]\[\]_']+)$)" );
-static std::regex ternary_expression( R"(^(~)?([[:alnum:]\[\]_']+)([&|^?])(~)?([[:alnum:]\[\]_']+)([&|^:])(~)?([[:alnum:]\[\]_']+)$)" );
-static std::regex maj3_expression( R"(^\((~)?([[:alnum:]\[\]_']+)&(~)?([[:alnum:]\[\]_']+)\)\|\((~)?([[:alnum:]\[\]_']+)&(~)?([[:alnum:]\[\]_']+)\)\|\((~)?([[:alnum:]\[\]_']+)&(~)?([[:alnum:]\[\]_']+)\)$)" );
-static std::regex negated_binary_expression( R"(^~\((~)?([[:alnum:]\[\]_']+)([&|^])(~)?([[:alnum:]\[\]_']+)\)$)" );
-static std::regex const_size_range( R"(^(\d+):(\d+)$)" );
+inline const std::regex immediate_assign( R"(^(~)?\(?([[:alnum:]\[\]_']+)\)?$)" );
+inline const std::regex binary_expression( R"(^(~)?([[:alnum:]\[\]_']+)([&|^])(~)?([[:alnum:]\[\]_']+)$)" );
+inline const std::regex ternary_expression( R"(^(~)?([[:alnum:]\[\]_']+)([&|^?])(~)?([[:alnum:]\[\]_']+)([&|^:])(~)?([[:alnum:]\[\]_']+)$)" );
+inline const std::regex maj3_expression( R"(^\((~)?([[:alnum:]\[\]_']+)&(~)?([[:alnum:]\[\]_']+)\)\|\((~)?([[:alnum:]\[\]_']+)&(~)?([[:alnum:]\[\]_']+)\)\|\((~)?([[:alnum:]\[\]_']+)&(~)?([[:alnum:]\[\]_']+)\)$)" );
+inline const std::regex negated_binary_expression( R"(^~\((~)?([[:alnum:]\[\]_']+)([&|^])(~)?([[:alnum:]\[\]_']+)\)$)" );
+inline const std::regex const_size_range( R"(^(\d+):(\d+)$)" );
 } // namespace verilog_regex
 
 } // namespace lorina
\ No newline at end of file