diff --git a/dep.mk b/dep.mk
index 292b18a1..e7ccc3b7 100644
--- a/dep.mk
+++ b/dep.mk
@@ -40,6 +40,8 @@ UNZIP := unzip -o
 CONFIGURE := ./configure --prefix="$(DEP_PATH)"
 
 CMAKE := cmake
+# Cmake 4 no longer emulates behavior from Cmake <3.5. But most libraries are fine if we use policies from a higher Cmake version.
+CMAKE += -DCMAKE_POLICY_VERSION_MINIMUM=3.5
 ifdef ARCH_WIN
 	CMAKE += -DCMAKE_SYSTEM_NAME=Windows
 endif
diff --git a/dep/Makefile b/dep/Makefile
index 01d9f77f..87ef8192 100755
--- a/dep/Makefile
+++ b/dep/Makefile
@@ -85,17 +85,17 @@ include $(RACK_DIR)/dep.mk
 # Targets
 # These targets are all order-only "|" because we usually don't care if a library was built before or after other libraries.
 
-glew-2.1.0:
-	$(WGET) "https://github.com/nigels-com/glew/releases/download/glew-2.1.0/glew-2.1.0.tgz"
-	$(SHA256) glew-2.1.0.tgz 04de91e7e6763039bc11940095cd9c7f880baba82196a7765f727ac05a993c95
-	$(UNTAR) glew-2.1.0.tgz
-	rm glew-2.1.0.tgz
-
-$(glew): | glew-2.1.0
-	cd glew-2.1.0 && mkdir -p build
-	cd glew-2.1.0/build && $(CMAKE) ./cmake
-	$(MAKE) -C glew-2.1.0/build
-	$(MAKE) -C glew-2.1.0/build install
+glew-2.2.0:
+	$(WGET) "https://github.com/nigels-com/glew/releases/download/glew-2.2.0/glew-2.2.0.tgz"
+	$(SHA256) glew-2.2.0.tgz d4fc82893cfb00109578d0a1a2337fb8ca335b3ceccf97b97e5cc7f08e4353e1
+	$(UNTAR) glew-2.2.0.tgz
+	rm glew-2.2.0.tgz
+
+$(glew): | glew-2.2.0
+	cd glew-2.2.0 && mkdir -p build
+	cd glew-2.2.0/build && $(CMAKE) ./cmake
+	$(MAKE) -C glew-2.2.0/build
+	$(MAKE) -C glew-2.2.0/build install
 
 $(glfw): | glfw
 	cd glfw && mkdir -p build
@@ -269,7 +269,7 @@ $(simde): simde/simde
 
 # Helpers
 
-src: glew-2.1.0 glfw jansson-2.12 libsamplerate-0.1.9 openssl-3.3.2 curl-8.10.0 zstd-1.5.6 libarchive-3.7.7 rtaudio nanovg nanosvg oui-blendish osdialog
+src: glew-2.2.0 glfw jansson-2.12 libsamplerate-0.1.9 openssl-3.3.2 curl-8.10.0 zstd-1.5.6 libarchive-3.7.7 rtaudio nanovg nanosvg oui-blendish osdialog
 
 clean:
 	git clean -fdx