diff --git a/.github/workflows/test-wasm.yml b/.github/workflows/test-wasm.yml
index 59f2230..e880dd7 100644
--- a/.github/workflows/test-wasm.yml
+++ b/.github/workflows/test-wasm.yml
@@ -3,13 +3,18 @@ name: Test WebAssembly
 
 on:
   workflow_dispatch:
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
+  pull_request:
+    types: [labeled, synchronize, reopened]
 
 jobs:
   build:
+    if: >-
+      github.event_name == 'workflow_dispatch' ||
+      (github.event.action == 'labeled' && github.event.label.name == 'run-wasm-ci') ||
+      (github.event.action != 'labeled' && contains(github.event.pull_request.labels.*.name, 'run-wasm-ci'))
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+      cancel-in-progress: true
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
diff --git a/dev-environment.yml b/dev-environment.yml
index 288a620..42988c1 100644
--- a/dev-environment.yml
+++ b/dev-environment.yml
@@ -7,6 +7,7 @@ dependencies:
   - cmake
   - pkg-config
   - pre-commit
+  - identify >=2.6
   - python
   - pytest
   - termcolor-cpp
diff --git a/wasm/wasm-environment.yml b/wasm/wasm-environment.yml
index 4e9c241..a5e9d9a 100644
--- a/wasm/wasm-environment.yml
+++ b/wasm/wasm-environment.yml
@@ -4,6 +4,7 @@ channels:
   - conda-forge
 dependencies:
   - pre-commit
+  - identify >=2.6
   # To modify emscripten-forge recipe
   - python
   - pyyaml