diff --git a/Dockerfile b/Dockerfile
index 721bc9c6d965c..b794c87909ae7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -196,6 +196,7 @@ RUN --mount=type=tmpfs,target=/webkitbuild \
     -DCMAKE_BUILD_TYPE=$WEBKIT_RELEASE_TYPE \
     -DUSE_THIN_ARCHIVES=OFF \
     -DUSE_BUN_JSC_ADDITIONS=ON \
+    -DUSE_BUN_EVENT_LOOP=ON \
     -DENABLE_FTL_JIT=ON \
     -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
     -DALLOW_LINE_AND_COLUMN_NUMBER_IN_BUILTINS=ON \
diff --git a/Dockerfile.musl b/Dockerfile.musl
index 70974f161216e..786ed30fbf241 100644
--- a/Dockerfile.musl
+++ b/Dockerfile.musl
@@ -89,6 +89,7 @@ RUN --mount=type=tmpfs,target=/webkitbuild \
     -DCMAKE_BUILD_TYPE=${WEBKIT_RELEASE_TYPE} \
     -DUSE_THIN_ARCHIVES=OFF \
     -DUSE_BUN_JSC_ADDITIONS=ON \
+    -DUSE_BUN_EVENT_LOOP=ON \
     -DENABLE_FTL_JIT=ON \
     -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
     -DALLOW_LINE_AND_COLUMN_NUMBER_IN_BUILTINS=ON \
diff --git a/mac-release.bash b/mac-release.bash
index e7ffba3129b54..b788fb03c1aad 100644
--- a/mac-release.bash
+++ b/mac-release.bash
@@ -43,6 +43,7 @@ cmake \
     -DCMAKE_CXX_FLAGS="$CMAKE_CXX_FLAGS -ffile-prefix-map=$THIS_DIR/Source=vendor/WebKit/Source " \
     -DENABLE_MALLOC_HEAP_BREAKDOWN=$ENABLE_MALLOC_HEAP_BREAKDOWN \
     -DUSE_BUN_JSC_ADDITIONS=ON \
+    -DUSE_BUN_EVENT_LOOP=ON \
     -DCMAKE_AR="$AR" \
     -DCMAKE_RANLIB="$RANLIB" \
     -DALLOW_LINE_AND_COLUMN_NUMBER_IN_BUILTINS=ON \
diff --git a/windows-release.ps1 b/windows-release.ps1
index 4445f7937ea2a..c472638a92b5e 100644
--- a/windows-release.ps1
+++ b/windows-release.ps1
@@ -193,6 +193,7 @@ cmake -S . -B $WebKitBuild `
     -DENABLE_SAMPLING_PROFILER=ON `
     "-DENABLE_WEBASSEMBLY=${WebAssemblyState}" `
     -DUSE_BUN_JSC_ADDITIONS=ON `
+    -DUSE_BUN_EVENT_LOOP=ON `
     -DENABLE_BUN_SKIP_FAILING_ASSERTIONS=ON `
     -DUSE_SYSTEM_MALLOC=ON `
     "-DICU_ROOT=${ICU_STATIC_ROOT}" `