diff --git a/Dockerfile.ios b/Dockerfile.ios
index f67f0a7..44e845e 100644
--- a/Dockerfile.ios
+++ b/Dockerfile.ios
@@ -6,6 +6,7 @@ RUN dnf -y install --setopt=install_weak_deps=False \
     dnf clean all && \
     git clone https://github.com/tpoechtrager/cctools-port.git && \
     cd /root/cctools-port && \
+    git checkout 8239a5211bcf07d6b9d359782e1a889ec1d7cce5 && \
     sed -i 's#./autogen.sh#libtoolize -c -i --force\n./autogen.sh#' usage_examples/ios_toolchain/build.sh && \
     usage_examples/ios_toolchain/build.sh /root/files/iPhoneOS12.4.sdk.tar.xz arm64 && \
     mkdir -p /root/ioscross/arm64 && \
diff --git a/Dockerfile.javascript b/Dockerfile.javascript
index 5e702c7..8399475 100644
--- a/Dockerfile.javascript
+++ b/Dockerfile.javascript
@@ -8,19 +8,21 @@ RUN dnf -y install --setopt=install_weak_deps=False \
     dnf clean all && \
     git clone https://github.com/emscripten-core/emsdk && \
     cd emsdk && \
+    git checkout a5082b232617c762cb65832429f896c838df2483 && \
     ./emsdk install 1.38.47-upstream && \
     ./emsdk activate 1.38.47-upstream && \
     echo "source /root/emsdk/emsdk_env.sh" >> /root/.bashrc
 
 RUN git clone https://github.com/mono/mono --branch ${mono_version} --single-branch && \
-    cd mono && git submodule update --init && cd .. && \
+    cd mono && git submodule update --init && \
+    git apply -3 /root/files/patches/mono-pr16636-wasm-bugfix-and-update.diff && \
+    cd .. && \
     export MONO_SOURCE_ROOT=/root/mono && \
     export make="make -j" && \
     git clone https://github.com/godotengine/godot-mono-builds && \
     cd godot-mono-builds && \
     git checkout bd129da22b8b9c96f3e8b07af348cc5fb61504bf && \
     python3 patch_emscripten.py && \
-    git am -3 /root/files/patches/mono-wasm-avoid-aligning-stack-bounds.patch && \
     python3 wasm.py configure --target=runtime && \
     python3 wasm.py make --target=runtime && \
     cd /root/mono && git clean -fdx && NOCONFIGURE=1 ./autogen.sh && \
diff --git a/Dockerfile.xcode b/Dockerfile.xcode
index 9de06fc..fb56827 100644
--- a/Dockerfile.xcode
+++ b/Dockerfile.xcode
@@ -5,11 +5,13 @@ RUN dnf -y install --setopt=install_weak_deps=False \
     dnf clean all && \
     git clone https://github.com/mackyle/xar.git && \
     cd xar/xar && \
+    git checkout 66d451dab1ef859dd0c83995f2379335d35e53c9 && \
     ./autogen.sh --prefix=/usr && \
     make -j && make install && \
     cd /root && \
     git clone https://github.com/NiklasRosenstein/pbzx && \
     cd pbzx && \
+    git checkout 2a4d7c3300c826d918def713a24d25c237c8ed53 && \
     clang -O3 -llzma -lxar -I /usr/local/include pbzx.c -o pbzx
 
 CMD mkdir -p /root/xcode && \
diff --git a/files/patches/mono-pr16636-wasm-bugfix-and-update.diff b/files/patches/mono-pr16636-wasm-bugfix-and-update.diff
new file mode 100644
index 0000000..d368aac
--- /dev/null
+++ b/files/patches/mono-pr16636-wasm-bugfix-and-update.diff
@@ -0,0 +1,144 @@
+diff --git a/mono/utils/mono-threads-wasm.c b/mono/utils/mono-threads-wasm.c
+index 687e6c4c93e7..c61d800f4be2 100644
+--- a/mono/utils/mono-threads-wasm.c
++++ b/mono/utils/mono-threads-wasm.c
+@@ -145,10 +145,10 @@ mono_threads_platform_yield (void)
+ void
+ mono_threads_platform_get_stack_bounds (guint8 **staddr, size_t *stsize)
+ {
++	int tmp;
+ #ifdef __EMSCRIPTEN_PTHREADS__
+ 	pthread_attr_t attr;
+ 	gint res;
+-	int tmp;
+ 
+ 	*staddr = NULL;
+ 	*stsize = (size_t)-1;
+@@ -173,13 +173,13 @@ mono_threads_platform_get_stack_bounds (guint8 **staddr, size_t *stsize)
+ 		*staddr = (guint8*)wasm_get_stack_base ();
+ 		*stsize = wasm_get_stack_size ();
+ 	}
+-
+-	g_assert (&tmp > *staddr);
+-	g_assert (&tmp < (char*)*staddr + *stsize);
+ #else
+ 	*staddr = (guint8*)wasm_get_stack_base ();
+ 	*stsize = wasm_get_stack_size ();
+ #endif
++
++	g_assert ((guint8*)&tmp > *staddr);
++	g_assert ((guint8*)&tmp < (guint8*)*staddr + *stsize);
+ }
+ 
+ gboolean
+diff --git a/mono/utils/mono-threads.c b/mono/utils/mono-threads.c
+index 546704ff9e8f..bf73e01c7970 100644
+--- a/mono/utils/mono-threads.c
++++ b/mono/utils/mono-threads.c
+@@ -1569,8 +1569,10 @@ mono_thread_info_get_stack_bounds (guint8 **staddr, size_t *stsize)
+ 	/* Sanity check the result */
+ 	g_assert ((current > *staddr) && (current < *staddr + *stsize));
+ 
++#ifndef TARGET_WASM
+ 	/* When running under emacs, sometimes staddr is not aligned to a page size */
+ 	*staddr = (guint8*)((gssize)*staddr & ~(mono_pagesize () - 1));
++#endif
+ }
+ 
+ gboolean
+diff --git a/scripts/ci/run-jenkins.sh b/scripts/ci/run-jenkins.sh
+index 514d869e3768..e65076cbb827 100755
+--- a/scripts/ci/run-jenkins.sh
++++ b/scripts/ci/run-jenkins.sh
+@@ -330,7 +330,7 @@ if [[ ${CI_TAGS} == *'webassembly'* ]] || [[ ${CI_TAGS} == *'wasm'* ]];
+         if [[ ${CI_TAGS} == *'debug'* ]]; then
+             echo "CONFIGURATION=debug" >> sdks/Make.config
+         fi
+-        echo "ENABLE_WASM_THREADS=1" >> sdks/Make.config
++        #echo "ENABLE_WASM_THREADS=1" >> sdks/Make.config
+ 
+ 	   export aot_test_suites="System.Core"
+ 	   export mixed_test_suites="System.Core"
+@@ -359,7 +359,7 @@ if [[ ${CI_TAGS} == *'webassembly'* ]] || [[ ${CI_TAGS} == *'wasm'* ]];
+             # disable for now until https://github.com/mono/mono/pull/13622 goes in
+             #${TESTCMD} --label=debugger --timeout=20m $gnumake -C sdks/wasm test-debugger
+             ${TESTCMD} --label=browser --timeout=20m $gnumake -C sdks/wasm run-browser-tests
+-            ${TESTCMD} --label=browser-threads --timeout=20m $gnumake -C sdks/wasm run-browser-threads-tests
++            #${TESTCMD} --label=browser-threads --timeout=20m $gnumake -C sdks/wasm run-browser-threads-tests
+             ${TESTCMD} --label=v8-corlib --timeout=20m $gnumake -C sdks/wasm run-v8-corlib
+             ${TESTCMD} --label=aot-mini --timeout=20m $gnumake -j ${CI_CPU_COUNT} -C sdks/wasm run-aot-mini
+             ${TESTCMD} --label=build-aot-all --timeout=20m $gnumake -j ${CI_CPU_COUNT} -C sdks/wasm build-aot-all
+diff --git a/sdks/builds/emscripten-pr-8457.diff b/sdks/builds/emscripten-pr-8457.diff
+index 0f051a914551..360af836be69 100644
+--- a/sdks/builds/emscripten-pr-8457.diff
++++ b/sdks/builds/emscripten-pr-8457.diff
+@@ -1,8 +1,6 @@
+-diff --git a/emcc.py b/emcc.py
+-index c241f396a..1fcffc993 100755
+---- a/emcc.py
+-+++ b/emcc.py
+-@@ -844,6 +844,9 @@ There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR P
++--- a/emcc.py	2019-08-13 20:07:34.000000000 -0500
+++++ b/emcc.py	2019-08-27 08:05:39.000000000 -0500
++@@ -890,6 +890,9 @@
+      lib_dirs = [shared.path_from_root('system', 'local', 'lib'),
+                  shared.path_from_root('system', 'lib')]
+  
+@@ -12,7 +10,7 @@ index c241f396a..1fcffc993 100755
+      # find input files this a simple heuristic. we should really analyze
+      # based on a full understanding of gcc params, right now we just assume that
+      # what is left contains no more |-x OPT| things
+-@@ -869,7 +872,7 @@ There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR P
++@@ -915,7 +918,7 @@
+          file_suffix = get_file_suffix(arg)
+          if file_suffix in SOURCE_ENDINGS + BITCODE_ENDINGS + DYNAMICLIB_ENDINGS + ASSEMBLY_ENDINGS + HEADER_ENDINGS or shared.Building.is_ar(arg): # we already removed -o <target>, so all these should be inputs
+            newargs[i] = ''
+@@ -21,16 +19,15 @@ index c241f396a..1fcffc993 100755
+              input_files.append((i, arg))
+              has_source_inputs = True
+            elif file_suffix.endswith(HEADER_ENDINGS):
+-@@ -938,8 +941,6 @@ There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR P
++@@ -984,7 +987,6 @@
+  
+-     newargs = [a for a in newargs if a is not '']
++     newargs = [a for a in newargs if a != '']
+  
+--    # -c means do not link in gcc, and for us, the parallel is to not go all the way to JS, but stop at bitcode
+ -    has_dash_c = '-c' in newargs
+-     if has_dash_c:
+-       assert has_source_inputs or has_header_inputs, 'Must have source code or header inputs to use -c'
+-       target = target_basename + '.o'
+-@@ -1666,7 +1667,7 @@ There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR P
++     has_dash_S = '-S' in newargs
++     if has_dash_c or has_dash_S:
++       assert has_source_inputs or has_header_inputs, 'Must have source code or header inputs to use -c or -S'
++@@ -1838,7 +1840,7 @@
+        # First, generate LLVM bitcode. For each input file, we get base.o with bitcode
+        for i, input_file in input_files:
+          file_ending = get_file_suffix(input_file)
+diff --git a/sdks/builds/wasm.mk b/sdks/builds/wasm.mk
+index 3e34e1cbaf08..ab7ef306a0b8 100644
+--- a/sdks/builds/wasm.mk
++++ b/sdks/builds/wasm.mk
+@@ -1,7 +1,7 @@
+ #emcc has lots of bash'isms
+ SHELL:=/bin/bash
+ 
+-EMSCRIPTEN_VERSION=1.38.38
++EMSCRIPTEN_VERSION=1.38.43
+ EMSCRIPTEN_LOCAL_SDK_DIR=$(TOP)/sdks/builds/toolchains/emsdk
+ 
+ EMSCRIPTEN_SDK_DIR ?= $(EMSCRIPTEN_LOCAL_SDK_DIR)
+diff --git a/tools/offsets-tool-py/offsets-tool.py b/tools/offsets-tool-py/offsets-tool.py
+index caaf1b96f1e2..10929bfdcf25 100644
+--- a/tools/offsets-tool-py/offsets-tool.py
++++ b/tools/offsets-tool-py/offsets-tool.py
+@@ -80,7 +80,7 @@ def require_emscipten_path (args):
+ 
+ 		if "wasm" in args.abi:
+ 			require_emscipten_path (args)
+-			self.sys_includes = [args.emscripten_path + "/system/include/libc"]
++			self.sys_includes = [args.emscripten_path + "/system/include/libc", args.emscripten_path + "/system/lib/libc/musl/arch/emscripten"]
+ 			self.target = Target ("TARGET_WASM", None, [])
+ 			self.target_args += ["-target", args.abi]
+ 
diff --git a/files/patches/mono-wasm-avoid-aligning-stack-bounds.patch b/files/patches/mono-wasm-avoid-aligning-stack-bounds.patch
deleted file mode 100644
index ba13f26..0000000
--- a/files/patches/mono-wasm-avoid-aligning-stack-bounds.patch
+++ /dev/null
@@ -1,59 +0,0 @@
-From aad54942583f8658ab6d7e7af5ffe3b76b3f35b3 Mon Sep 17 00:00:00 2001
-From: Zoltan Varga <vargaz@gmail.com>
-Date: Tue, 3 Sep 2019 13:27:24 -0400
-Subject: [PATCH] [wasm] Avoid aligning the stack bounds, they are not page
- aligned on wasm.
-
----
- mono/utils/mono-threads-wasm.c | 8 ++++----
- mono/utils/mono-threads.c      | 2 ++
- 2 files changed, 6 insertions(+), 4 deletions(-)
-
-diff --git a/mono/utils/mono-threads-wasm.c b/mono/utils/mono-threads-wasm.c
-index 687e6c4c93e7..c61d800f4be2 100644
---- a/mono/utils/mono-threads-wasm.c
-+++ b/mono/utils/mono-threads-wasm.c
-@@ -145,10 +145,10 @@ mono_threads_platform_yield (void)
- void
- mono_threads_platform_get_stack_bounds (guint8 **staddr, size_t *stsize)
- {
-+	int tmp;
- #ifdef __EMSCRIPTEN_PTHREADS__
- 	pthread_attr_t attr;
- 	gint res;
--	int tmp;
- 
- 	*staddr = NULL;
- 	*stsize = (size_t)-1;
-@@ -173,13 +173,13 @@ mono_threads_platform_get_stack_bounds (guint8 **staddr, size_t *stsize)
- 		*staddr = (guint8*)wasm_get_stack_base ();
- 		*stsize = wasm_get_stack_size ();
- 	}
--
--	g_assert (&tmp > *staddr);
--	g_assert (&tmp < (char*)*staddr + *stsize);
- #else
- 	*staddr = (guint8*)wasm_get_stack_base ();
- 	*stsize = wasm_get_stack_size ();
- #endif
-+
-+	g_assert ((guint8*)&tmp > *staddr);
-+	g_assert ((guint8*)&tmp < (guint8*)*staddr + *stsize);
- }
- 
- gboolean
-diff --git a/mono/utils/mono-threads.c b/mono/utils/mono-threads.c
-index 546704ff9e8f..bf73e01c7970 100644
---- a/mono/utils/mono-threads.c
-+++ b/mono/utils/mono-threads.c
-@@ -1569,8 +1569,10 @@ mono_thread_info_get_stack_bounds (guint8 **staddr, size_t *stsize)
- 	/* Sanity check the result */
- 	g_assert ((current > *staddr) && (current < *staddr + *stsize));
- 
-+#ifndef TARGET_WASM
- 	/* When running under emacs, sometimes staddr is not aligned to a page size */
- 	*staddr = (guint8*)((gssize)*staddr & ~(mono_pagesize () - 1));
-+#endif
- }
- 
- gboolean