diff --git a/build.sh b/build.sh
index 9123bf92..b9c50eb4 100644
--- a/build.sh
+++ b/build.sh
@@ -19,7 +19,7 @@ SRC=$(find src/ -name "*.c")
 
 echo "> Compiling and linking source files... "
 
-clang -std=c11 -O2 -Wfatal-errors -Iinclude -DNDEBUG -o main src2/main.c $SRC -lm
+clang -std=c11 -O2 -Wfatal-errors -Iinclude -DNDEBUG -o main src2/main.c $SRC -lm -ldl
 
 if [ $? -eq 0 ]; then
     echo "Build completed. Type \"./main\" to enter REPL."
diff --git a/build_g.sh b/build_g.sh
index 9909b282..b9570dd3 100644
--- a/build_g.sh
+++ b/build_g.sh
@@ -4,7 +4,7 @@ python prebuild.py
 
 SRC=$(find src/ -name "*.c")
 
-FLAGS="-std=c11 -lm -Iinclude -O0 -Wfatal-errors -g -DDEBUG -DPK_ENABLE_OS=1"
+FLAGS="-std=c11 -lm -ldl -Iinclude -O0 -Wfatal-errors -g -DDEBUG -DPK_ENABLE_OS=1"
 
 SANITIZE_FLAGS="-fsanitize=address,leak,undefined"
 
diff --git a/run_profile.sh b/run_profile.sh
index cc1528ea..28cc8c37 100644
--- a/run_profile.sh
+++ b/run_profile.sh
@@ -4,7 +4,7 @@ python prebuild.py
 
 SRC=$(find src/ -name "*.c")
 
-gcc -pg -Og -std=c11 -Wfatal-errors -o main $SRC src2/main.c -Iinclude -lm -DNDEBUG -flto
+gcc -pg -Og -std=c11 -Wfatal-errors -o main $SRC src2/main.c -Iinclude -lm -ldl -DNDEBUG -flto
 ./main benchmarks/fib.py
 gprof main gmon.out > gprof.txt
 rm gmon.out
diff --git a/run_tests.sh b/run_tests.sh
index 14915a2f..d827701b 100644
--- a/run_tests.sh
+++ b/run_tests.sh
@@ -4,7 +4,7 @@ python prebuild.py
 
 SRC=$(find src/ -name "*.c")
 
-clang -std=c11 --coverage -O1 -Wfatal-errors -o main src2/main.c $SRC -Iinclude -DPK_ENABLE_OS=1 -DPK_ENABLE_PROFILER=1 -lm -DNDEBUG
+clang -std=c11 --coverage -O1 -Wfatal-errors -o main src2/main.c $SRC -Iinclude -DPK_ENABLE_OS=1 -DPK_ENABLE_PROFILER=1 -lm -ldl -DNDEBUG
 
 python scripts/run_tests.py