diff --git a/.gitmodules b/.gitmodules
index 3def47a..13f3836 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "3rdparty"]
 	path = 3rdparty
-	url = git@github.com:Puara/3rdparty.git
+	url = https://github.com/Puara/3rdparty
diff --git a/3rdparty b/3rdparty
index de118c8..4f998a6 160000
--- a/3rdparty
+++ b/3rdparty
@@ -1 +1 @@
-Subproject commit de118c8d612644948a4e7d6ec34057ab4e0c221b
+Subproject commit 4f998a66d99983812c0525baa9460614061b209b
diff --git a/include/puara/utils.h b/include/puara/utils.h
index 7869047..038fe5b 100644
--- a/include/puara/utils.h
+++ b/include/puara/utils.h
@@ -21,6 +21,10 @@
 #include <cmath>
 #include <chrono>
 
+#ifndef M_PI
+  #define M_PI 3.141592653589793238462643383279502984
+#endif
+
 namespace puara_gestures::utils
 {