diff --git a/build-fast.sh b/build-fast.sh
index edade9c..0ff3f12 100755
--- a/build-fast.sh
+++ b/build-fast.sh
@@ -6,37 +6,37 @@ cd ..
 
 #building library first
 cd library/build
-cmake ..
+cmake .. -DCMAKE_BUILD_TYPE=Release
 make library
 cd ../..
 
 cd demo/build
-cmake ..
+cmake .. -DCMAKE_BUILD_TYPE=Release
 make Demo
 cd ../..
 
 cd gui/build
-cmake ..
+cmake .. -DCMAKE_BUILD_TYPE=Release
 make GUI
 cd ../..
 
 cd shared-memory/build
-cmake ..
+cmake .. -DCMAKE_BUILD_TYPE=Release
 make SharedMemory
 cd ../..
 
 cd simple-draw/build
-cmake ..
+cmake .. -DCMAKE_BUILD_TYPE=Release
 make SimpleDraw
 cd ../..
 
 cd terminal/build
-cmake ..
+cmake .. -DCMAKE_BUILD_TYPE=Release
 make Terminal
 cd ../..
 
 cd text-renderer/build
-cmake ..
+cmake .. -DCMAKE_BUILD_TYPE=Release
 make TextRenderer
 cd ../..