diff --git a/.github/workflows/build-wasm_of_ocaml.yml b/.github/workflows/build-wasm_of_ocaml.yml
index 4a6cb49d40..74d302a0da 100644
--- a/.github/workflows/build-wasm_of_ocaml.yml
+++ b/.github/workflows/build-wasm_of_ocaml.yml
@@ -37,7 +37,7 @@ jobs:
             ocaml-compiler: "5.2"
             separate_compilation: true
             jane_street_tests: true
-            all_jane_street_tests: true
+            all_jane_street_tests: false
           - os: ubuntu-latest
             ocaml-compiler: "5.2"
             separate_compilation: true
@@ -125,59 +125,56 @@ jobs:
           opam install .
           opam install num cohttp-lwt-unix ppx_expect cstruct uucp
 
-#      - name: Run tests
-#        if: ${{ matrix.separate_compilation }}
-#        working-directory: ./w
-#        run: opam exec -- dune build @runtest-wasm
-#
-#      - name: Run tests with CPS effects
-#        if: ${{ matrix.ocaml-compiler >= '5.' && matrix.separate_compilation }}
-#        working-directory: ./w
-#        run: opam exec -- dune build @runtest-wasm --profile with-effects
-#
-#      - name: Run Base tests
-#        if: matrix.all_jane_street_tests
-#        working-directory: ./j/lib/base
-#        run: opam exec -- dune runtest
-#
-#      - name: Run Base bigstring tests
-#        # sandboxing issue
-#        if: ${{ matrix.all_jane_street_tests && matrix.os != 'windows-latest'}}
-#        working-directory: ./j/lib/base_bigstring
-#        run: opam exec -- dune runtest
-#
-#      - name: Run Core tests
-#        # tests fails on windows
-#        if: ${{ matrix.all_jane_street_tests && matrix.os != 'windows-latest'}}
-#        working-directory: ./j/lib/core
-#        run: opam exec -- dune runtest
-#
-#      - name: Run Bignum tests
-#        if: matrix.all_jane_street_tests
-#        working-directory: ./j/lib/bignum
-#        run: opam exec -- dune runtest
-#
-#      - name: Run Bin_prot tests
-#        # tests fails on windows
-#        if: ${{ matrix.all_jane_street_tests && matrix.os != 'windows-latest'}}
-#        working-directory: ./j/lib/bin_prot
-#        run: opam exec -- dune runtest
-#
-#      - name: Run String_dict tests
-#        if: matrix.all_jane_street_tests
-#        working-directory: ./j/lib/string_dict
-#        run: opam exec -- dune runtest
-#
-#      - name: Run Zarith tests
-#        # sandboxing issue
-#        if: ${{ matrix.all_jane_street_tests && matrix.os != 'windows-latest'}}
-#        working-directory: ./j/lib/zarith_stubs_js
-#        run: opam exec -- dune runtest
-#
-#      - name: Run Virtual_dom tests
-#        if: matrix.all_jane_street_tests
-#        working-directory: ./j/lib/virtual_dom
-#        run: opam exec -- dune runtest
+      - name: Run tests
+        if: ${{ matrix.separate_compilation }}
+        working-directory: ./w
+        run: opam exec -- dune build @runtest-wasm
+
+      - name: Run tests with CPS effects
+        if: ${{ matrix.ocaml-compiler >= '5.' && matrix.separate_compilation }}
+        working-directory: ./w
+        run: opam exec -- dune build @runtest-wasm --profile with-effects
+
+      - name: Run Base tests
+        if: ${{ matrix.all_jane_street_tests || matrix.os == 'windows-latest' }}
+        working-directory: ./j/lib/base
+        run: opam exec -- dune runtest
+
+      - name: Run Base bigstring tests
+        if: matrix.all_jane_street_tests
+        working-directory: ./j/lib/base_bigstring
+        run: opam exec -- dune runtest
+
+      - name: Run Core tests
+        if: matrix.all_jane_street_tests
+        working-directory: ./j/lib/core
+        run: opam exec -- dune runtest
+
+      - name: Run Bignum tests
+        if: ${{ matrix.all_jane_street_tests || matrix.os == 'windows-latest' }}
+        working-directory: ./j/lib/bignum
+        run: opam exec -- dune runtest
+
+      - name: Run Bin_prot tests
+        # tests fails on windows
+        if: matrix.all_jane_street_tests
+        working-directory: ./j/lib/bin_prot
+        run: opam exec -- dune runtest
+
+      - name: Run String_dict tests
+        if: ${{ matrix.all_jane_street_tests || matrix.os == 'windows-latest' }}
+        working-directory: ./j/lib/string_dict
+        run: opam exec -- dune runtest
+
+      - name: Run Zarith tests
+        if: matrix.all_jane_street_tests
+        working-directory: ./j/lib/zarith_stubs_js
+        run: opam exec -- dune runtest
+
+      - name: Run Virtual_dom tests
+        if: matrix.all_jane_street_tests
+        working-directory: ./j/lib/virtual_dom
+        run: opam exec -- dune runtest
 
       - name: Run Bonsai tests
         if: matrix.all_jane_street_tests