diff --git a/.github/workflows/abi_wasm.yml b/.github/workflows/abi_wasm.yml
index fbbfeba2331..d4e4c37bc29 100644
--- a/.github/workflows/abi_wasm.yml
+++ b/.github/workflows/abi_wasm.yml
@@ -22,27 +22,16 @@ jobs:
       - name: Checkout sources
         uses: actions/checkout@v3
 
-      - uses: cachix/install-nix-action@v20
+      - name: Setup Nix
+        uses: cachix/install-nix-action@v22
         with:
           nix_path: nixpkgs=channel:nixos-23.05
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Restore nix store cache
-        uses: actions/cache/restore@v3
-        id: cache
+      - uses: cachix/cachix-action@v12
         with:
-          path: ${{ env.CACHED_PATH }}
-          key: ${{ runner.os }}-flake-abi-wasm-${{ hashFiles('*.lock') }}
-
-      # Based on https://github.com/marigold-dev/deku/blob/b5016f0cf4bf6ac48db9111b70dd7fb49b969dfd/.github/workflows/build.yml#L26
-      - name: Copy cache into nix store
-        if: steps.cache.outputs.cache-hit == 'true'
-        # We don't check the signature because we're the one that created the cache
-        run: |
-          for narinfo in ${{ env.CACHED_PATH }}/*.narinfo; do
-            path=$(head -n 1 "$narinfo" | awk '{print $2}')
-            nix copy --no-check-sigs --from "file://${{ env.CACHED_PATH }}" "$path"
-          done
+          name: barretenberg
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
 
       - name: Build noirc_abi_wasm
         run: |
@@ -55,13 +44,6 @@ jobs:
         run: |
           nix copy --to "file://${{ env.CACHED_PATH }}?compression=zstd&parallel-compression=true" .#noirc-abi-wasm-cargo-artifacts
 
-      - uses: actions/cache/save@v3
-        # Don't create cache entries for the merge queue.
-        if: ${{ steps.cache.outputs.cache-hit != 'true' && github.event_name != 'merge_group' }}
-        with:
-          path: ${{ env.CACHED_PATH }}
-          key: ${{ steps.cache.outputs.cache-primary-key }}
-
       - name: Dereference symlink
         run: echo "UPLOAD_PATH=$(readlink -f ./result/noirc_abi_wasm)" >> $GITHUB_ENV
 
diff --git a/.github/workflows/acvm-rust.yml b/.github/workflows/acvm-rust.yml
index 0394c306fff..097b81647e2 100644
--- a/.github/workflows/acvm-rust.yml
+++ b/.github/workflows/acvm-rust.yml
@@ -20,31 +20,16 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - uses: cachix/install-nix-action@v22
+      - name: Setup Nix
+        uses: cachix/install-nix-action@v22
         with:
-          nix_path: nixpkgs=channel:nixos-22.11
+          nix_path: nixpkgs=channel:nixos-23.05
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
 
       - uses: cachix/cachix-action@v12
         with:
           name: barretenberg
-
-      - name: Restore nix store cache
-        id: nix-store-cache
-        uses: actions/cache@v3
-        with:
-          path: /tmp/nix-cache
-          key: ${{ runner.os }}-flake-${{ hashFiles('*.lock') }}
-
-      # Based on https://github.com/marigold-dev/deku/blob/b5016f0cf4bf6ac48db9111b70dd7fb49b969dfd/.github/workflows/build.yml#L26
-      - name: Copy cache into nix store
-        if: steps.nix-store-cache.outputs.cache-hit == 'true'
-        # We don't check the signature because we're the one that created the cache
-        run: |
-          for narinfo in /tmp/nix-cache/*.narinfo; do
-            path=$(head -n 1 "$narinfo" | awk '{print $2}')
-            nix copy --no-check-sigs --from "file:///tmp/nix-cache" "$path"
-          done
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
 
       - name: Run `nix flake check`
         working-directory: acvm-repo
diff --git a/.github/workflows/test-integration.yml b/.github/workflows/test-integration.yml
index 3680a1661d8..02ab6839d11 100644
--- a/.github/workflows/test-integration.yml
+++ b/.github/workflows/test-integration.yml
@@ -35,22 +35,6 @@ jobs:
           name: barretenberg
           authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
 
-      - name: Restore nix store cache
-        uses: actions/cache/restore@v3
-        id: cache
-        with:
-          path: ${{ env.CACHED_PATH }}
-          key: ${{ runner.os }}-flake-wasm-${{ hashFiles('*.lock') }}
-
-      # Based on https://github.com/marigold-dev/deku/blob/b5016f0cf4bf6ac48db9111b70dd7fb49b969dfd/.github/workflows/build.yml#L26
-      - name: Copy cache into nix store
-        if: steps.cache.outputs.cache-hit == 'true'
-        # We don't check the signature because we're the one that created the cache
-        run: |
-          for narinfo in ${{ env.CACHED_PATH }}/*.narinfo; do
-            path=$(head -n 1 "$narinfo" | awk '{print $2}')
-            nix copy --no-check-sigs --from "file://${{ env.CACHED_PATH }}" "$path"
-          done
 
       - name: Build noir_wasm package
         run: |
diff --git a/.github/workflows/wasm.yml b/.github/workflows/wasm.yml
index 71972d5e5c5..82c094959bc 100644
--- a/.github/workflows/wasm.yml
+++ b/.github/workflows/wasm.yml
@@ -59,42 +59,18 @@ jobs:
       - name: Setup Nix
         uses: cachix/install-nix-action@v22
         with:
-          nix_path: nixpkgs=channel:nixos-22.11
+          nix_path: nixpkgs=channel:nixos-23.05
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Restore nix store cache
-        uses: actions/cache/restore@v3
-        id: cache
+      - uses: cachix/cachix-action@v12
         with:
-          path: ${{ env.CACHED_PATH }}
-          key: ${{ runner.os }}-flake-wasm-${{ hashFiles('*.lock') }}
-
-      # Based on https://github.com/marigold-dev/deku/blob/b5016f0cf4bf6ac48db9111b70dd7fb49b969dfd/.github/workflows/build.yml#L26
-      - name: Copy cache into nix store
-        if: steps.cache.outputs.cache-hit == 'true'
-        # We don't check the signature because we're the one that created the cache
-        run: |
-          for narinfo in ${{ env.CACHED_PATH }}/*.narinfo; do
-            path=$(head -n 1 "$narinfo" | awk '{print $2}')
-            nix copy --no-check-sigs --from "file://${{ env.CACHED_PATH }}" "$path"
-          done
+          name: barretenberg
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
 
       - name: Build wasm package
         run: |
           nix build -L .#noir_wasm
 
-      - name: Export cache from nix store
-        if: ${{ steps.cache.outputs.cache-hit != 'true' && github.event_name != 'merge_group' }}
-        run: |
-          nix copy --to "file://${{ env.CACHED_PATH }}?compression=zstd&parallel-compression=true" .#noir-wasm-cargo-artifacts
-
-      - uses: actions/cache/save@v3
-        # Don't create cache entries for the merge queue.
-        if: ${{ steps.cache.outputs.cache-hit != 'true' && github.event_name != 'merge_group' }}
-        with:
-          path: ${{ env.CACHED_PATH }}
-          key: ${{ steps.cache.outputs.cache-primary-key }}
-
       - name: Dereference symlink
         run: echo "UPLOAD_PATH=$(readlink -f ./result/noir_wasm)" >> $GITHUB_ENV