diff --git a/.github/workflows/tests-evm.yml b/.github/workflows/tests-evm.yml
index 7e100e66..f7f4b741 100644
--- a/.github/workflows/tests-evm.yml
+++ b/.github/workflows/tests-evm.yml
@@ -26,6 +26,10 @@ jobs:
     timeout-minutes: 60
     container:
       image: ${{ needs.preflight.outputs.IMAGE }}
+    env:
+      # Temporary: Skip WASM build due to serde_core + Rust 1.88 + WASM bug
+      # Tracking: https://github.com/pezkuwichain/pezkuwi-sdk/issues/358
+      SKIP_WASM_BUILD: 1
     permissions:
       pull-requests: write
     strategy:
@@ -111,6 +115,9 @@ jobs:
       # but still want to have debug assertions.
       RUSTFLAGS: "-C debug-assertions"
       RUST_BACKTRACE: 1
+      # Temporary: Skip WASM build due to serde_core + Rust 1.88 + WASM bug
+      # Tracking: https://github.com/pezkuwichain/pezkuwi-sdk/issues/358
+      SKIP_WASM_BUILD: 1
     strategy:
       matrix:
         platform:
diff --git a/.github/workflows/tests-linux-stable-coverage.yml b/.github/workflows/tests-linux-stable-coverage.yml
index 811366c5..a198b134 100644
--- a/.github/workflows/tests-linux-stable-coverage.yml
+++ b/.github/workflows/tests-linux-stable-coverage.yml
@@ -34,6 +34,9 @@ jobs:
       # -Cinstrument-coverage slows everything down but it is necessary for code coverage
       # https://doc.rust-lang.org/rustc/instrument-coverage.html
       RUSTFLAGS: "-Cdebug-assertions=y -Dwarnings -Cinstrument-coverage"
+      # Temporary: Skip WASM build due to serde_core + Rust 1.88 + WASM bug
+      # Tracking: https://github.com/pezkuwichain/pezkuwi-sdk/issues/358
+      SKIP_WASM_BUILD: 1
       LLVM_PROFILE_FILE: "/__w/pezkuwi-sdk/pezkuwi-sdk/target/coverage/cargo-test-${{ matrix.ci_node_index }}-%p-%m.profraw"
     strategy:
       fail-fast: false
diff --git a/.github/workflows/tests-linux-stable-xp.yml b/.github/workflows/tests-linux-stable-xp.yml
index bdb6de98..97d7388a 100644
--- a/.github/workflows/tests-linux-stable-xp.yml
+++ b/.github/workflows/tests-linux-stable-xp.yml
@@ -39,6 +39,9 @@ jobs:
       # Enable debug assertions since we are running optimized builds for testing
       # but still want to have debug assertions.
       RUSTFLAGS: "-Cdebug-assertions=y -Dwarnings"
+      # Temporary: Skip WASM build due to serde_core + Rust 1.88 + WASM bug
+      # Tracking: https://github.com/pezkuwichain/pezkuwi-sdk/issues/358
+      SKIP_WASM_BUILD: 1
     steps:
       - name: Checkout
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
@@ -70,6 +73,9 @@ jobs:
       # Enable debug assertions since we are running optimized builds for testing
       # but still want to have debug assertions.
       RUSTFLAGS: "-Cdebug-assertions=y -Dwarnings"
+      # Temporary: Skip WASM build due to serde_core + Rust 1.88 + WASM bug
+      # Tracking: https://github.com/pezkuwichain/pezkuwi-sdk/issues/358
+      SKIP_WASM_BUILD: 1
     steps:
       - name: Checkout
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
diff --git a/.github/workflows/tests-misc.yml b/.github/workflows/tests-misc.yml
index 8f99e1a9..5c8ab9ef 100644
--- a/.github/workflows/tests-misc.yml
+++ b/.github/workflows/tests-misc.yml
@@ -34,6 +34,9 @@ jobs:
       # but still want to have debug assertions.
       RUSTFLAGS: "-C debug-assertions"
       RUST_BACKTRACE: 1
+      # Temporary: Skip WASM build due to serde_core + Rust 1.88 + WASM bug
+      # Tracking: https://github.com/pezkuwichain/pezkuwi-sdk/issues/358
+      SKIP_WASM_BUILD: 1
     steps:
       - name: Checkout
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0