diff --git a/Makefile b/Makefile
index 738a00e..f075e14 100644
--- a/Makefile
+++ b/Makefile
@@ -29,7 +29,7 @@ BIN := $(BINDIR)/orbital_shipping
 ifeq ($(USE_INTERNAL_ASSIMP), y)
 $(warning using internal assimp)
 ASSIMP_DIR := $(LIBDIR)/ext/assimp
-CXXFLAGS += -I$(ASSIMP_DIR)/include
+CXXFLAGS += -I$(ASSIMP_DIR)/include -I$(ASSIMP_DIR)/build/include
 ASSIMP_LIB := $(ASSIMP_DIR)/build/code/libassimp.a
 LDFLAGS := -lSDL2 -lGLEW -lGL
 endif
diff --git a/README b/README
index 3a16f44..88389b2 100644
--- a/README
+++ b/README
@@ -15,8 +15,8 @@ TODO:
 Building:
 	install dependencies for your environment:
 		Arch) $ sudo pacman -S assimp glew glm sdl2 catch2 gcc make
-		Fedora) $ sudo dnf install assimp-devel glew-devel glm-devel \
-			SDL2-devel catch-devel gcc-c++ make cmake
+		Fedora) $ sudo dnf install glew-devel glm-devel SDL2-devel \
+			catch-devel gcc-c++ make cmake
 			NOTE: fedora (33) see note below about assimp
 	checkout, and initialise submodule dependencies:
 		$ git submodule update --init --recursive
diff --git a/ext/tangerine b/ext/tangerine
index ee7efd0..7ad3190 160000
--- a/ext/tangerine
+++ b/ext/tangerine
@@ -1 +1 @@
-Subproject commit ee7efd060ea8f391857cd3254c18663423e4abf2
+Subproject commit 7ad31909e4e23f01221feb12e818c377fc3add03