diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index f3d381d0..f76103f6 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -24,7 +24,7 @@ FROM mcr.microsoft.com/vscode/devcontainers/typescript-node:0-${VARIANT}
 # Install EMSDK to /emsdk just like the EMSDK Dockerfile: https://github.com/emscripten-core/emsdk/blob/master/docker/Dockerfile
 ENV EMSDK /emsdk
 # We pin EMSDK to 2.0.15 rather than 'latest' so that everyone is using the same compiler version
-ENV EMSCRIPTEN_VERSION 2.0.15
+ENV EMSCRIPTEN_VERSION 2.0.29
 
 RUN git clone https://github.com/emscripten-core/emsdk.git $EMSDK
 
@@ -36,7 +36,7 @@ RUN echo "## Install Emscripten" \
 # Copied directly from https://github.com/emscripten-core/emsdk/blob/master/docker/Dockerfile
 RUN cd ${EMSDK} \
     && echo "## Generate standard configuration" \
-    && ./emsdk activate $EMSCRIPTEN_VERSION \
+    && ./emsdk activate ${EMSCRIPTEN_VERSION} \
     && chmod 777 ${EMSDK}/upstream/emscripten \
     && chmod -R 777 ${EMSDK}/upstream/emscripten/cache \
     && echo "int main() { return 0; }" > hello.c \
@@ -47,6 +47,7 @@ RUN cd ${EMSDK} \
 ENV PATH $EMSDK:$EMSDK/upstream/emscripten/:$PATH
 
 # Cleanup Emscripten installation and strip some symbols
+# Copied directly from https://github.com/emscripten-core/emsdk/blob/master/docker/Dockerfile
 RUN echo "## Aggressive optimization: Remove debug symbols" \
     && cd ${EMSDK} && . ./emsdk_env.sh \
     # Remove debugging symbols from embedded node (extra 7MB)
@@ -60,6 +61,12 @@ RUN echo "## Aggressive optimization: Remove debug symbols" \
     && echo "## Done"
 
 RUN echo ". /emsdk/emsdk_env.sh" >> /etc/bash.bashrc
+# We must set the EM_NODE_JS environment variable for a somewhat silly reason
+# We run our build scripts with `npm run`, which sets the NODE environment variable as it runs.
+# The EMSDK picks up on that environment variable and gives a deprecation warning: warning: honoring legacy environment variable `NODE`.  Please switch to using `EM_NODE_JS` instead`
+# So, we are going to put this environment variable here explicitly to avoid the deprecation warning.
+RUN echo 'export EM_NODE_JS="$EMSDK_NODE"' >> /etc/bash.bashrc
+
 # END EMSDK
 # --------------------------------------------------------------------
 
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index f40ff7e8..e590542e 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -18,7 +18,9 @@
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
 	// "forwardPorts": [],
 	// Use 'postCreateCommand' to run commands after the container is created.
-	// "postCreateCommand": "yarn install",
+	// We use `npm ci` instead of `npm install` because we want to respect the lockfile and ONLY the lockfile.
+	// That way, our devcontainer is more reproducible. --Taytay
+	"postCreateCommand": "npm ci",
 	// Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
 	"remoteUser": "node"
 }
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 02eb68f4..dfdb10f4 100644
--- a/Makefile
+++ b/Makefile
@@ -35,7 +35,7 @@ EMFLAGS = \
 	-s RESERVED_FUNCTION_POINTERS=64 \
 	-s ALLOW_TABLE_GROWTH=1 \
 	-s EXPORTED_FUNCTIONS=@src/exported_functions.json \
-	-s EXTRA_EXPORTED_RUNTIME_METHODS=@src/exported_runtime_methods.json \
+	-s EXPORTED_RUNTIME_METHODS=@src/exported_runtime_methods.json \
 	-s SINGLE_FILE=0 \
 	-s NODEJS_CATCH_EXIT=0 \
 	-s NODEJS_CATCH_REJECTION=0
@@ -154,7 +154,7 @@ out/sqlite3.bc: sqlite-src/$(SQLITE_AMALGAMATION)
 out/extension-functions.bc: sqlite-src/$(SQLITE_AMALGAMATION)
 	mkdir -p out
 	# Generate llvm bitcode
-	$(EMCC) $(CFLAGS) -s LINKABLE=1 -c sqlite-src/$(SQLITE_AMALGAMATION)/extension-functions.c -o $@
+	$(EMCC) $(CFLAGS) -c sqlite-src/$(SQLITE_AMALGAMATION)/extension-functions.c -o $@
 
 # TODO: This target appears to be unused. If we re-instatate it, we'll need to add more files inside of the JS folder
 # module.tar.gz: test package.json AUTHORS README.md dist/sql-asm.js