diff --git a/linux/Makefile b/linux/Makefile
index f886aa44..91f26f0a 100644
--- a/linux/Makefile
+++ b/linux/Makefile
@@ -334,7 +334,7 @@ $(DOWNLOADS)/ruby/configure: $(DOWNLOADS)/ruby/configure.ac
 	cd $(DOWNLOADS)/ruby; autoreconf -i
 
 $(DOWNLOADS)/ruby/configure.ac:
-	$(CLONE) $(GITHUB)/mkxp-z/ruby $(DOWNLOADS)/ruby --single-branch --branch mkxp-z-3.1.7 --depth 1
+	$(CLONE) $(GITHUB)/mkxp-z/ruby $(DOWNLOADS)/ruby --single-branch --branch mkxp-z-3.1.3 --depth 1;
 
 # ====
 init_dirs:
diff --git a/macos/Dependencies/common.make b/macos/Dependencies/common.make
index 078dc305..408319ee 100644
--- a/macos/Dependencies/common.make
+++ b/macos/Dependencies/common.make
@@ -317,7 +317,8 @@ $(DOWNLOADS)/ruby/configure: $(DOWNLOADS)/ruby/configure.ac
 	cd $(DOWNLOADS)/ruby; autoreconf -i
 
 $(DOWNLOADS)/ruby/configure.ac:
-	$(CLONE) $(GITHUB)/mkxp-z/ruby $(DOWNLOADS)/ruby --single-branch -b mkxp-z-3.1.7 --depth 1
+	$(CLONE) $(GITHUB)/mkxp-z/ruby $(DOWNLOADS)/ruby --single-branch -b mkxp-z-3.1.3 --depth 1;
+	sed -i '' '/: $${PRELOADENV=DYLD_INSERT_LIBRARIES}/g' $(DOWNLOADS)/ruby/configure.ac
 
 # ====
 init_dirs:
diff --git a/windows/Makefile b/windows/Makefile
index 453b8563..87b11db0 100755
--- a/windows/Makefile
+++ b/windows/Makefile
@@ -314,7 +314,7 @@ $(DOWNLOADS)/ruby/configure: $(DOWNLOADS)/ruby/configure.ac
 	cd $(DOWNLOADS)/ruby; autoreconf -i
 
 $(DOWNLOADS)/ruby/configure.ac:
-	$(CLONE) $(GITHUB)/mkxp-z/ruby $(DOWNLOADS)/ruby --single-branch --branch mkxp-z-3.1.7 --depth 1
+	$(CLONE) $(GITHUB)/mkxp-z/ruby $(DOWNLOADS)/ruby --single-branch --branch mkxp-z-3.1.3 --depth 1;
 
 # ====
 init_dirs: