diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppFileTypes.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppFileTypes.java
index c4b502e..d525d0b 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppFileTypes.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppFileTypes.java
@@ -206,7 +206,8 @@
 
   // TODO(bazel-team): File types should not be read from this hard-coded list but should come from
   // the toolchain instead. See https://github.com/bazelbuild/bazel/issues/17117
-  public static final FileType SHARED_LIBRARY = FileType.of(".so", ".dylib", ".dll", ".pyd");
+  public static final FileType SHARED_LIBRARY =
+      FileType.of(".so", ".dylib", ".dll", ".pyd", ".wasm");
   // Unix shared libraries can be passed to linker, but not .dll on Windows
   public static final FileType UNIX_SHARED_LIBRARY = FileType.of(".so", ".dylib");
   public static final FileType INTERFACE_SHARED_LIBRARY =
diff --git a/src/main/starlark/builtins_bzl/common/cc/cc_helper.bzl b/src/main/starlark/builtins_bzl/common/cc/cc_helper.bzl
index c3c80d4..33937eb 100644
--- a/src/main/starlark/builtins_bzl/common/cc/cc_helper.bzl
+++ b/src/main/starlark/builtins_bzl/common/cc/cc_helper.bzl
@@ -350,7 +350,8 @@
 PIC_ARCHIVE = [".pic.a"]
 ALWAYSLINK_LIBRARY = [".lo"]
 ALWAYSLINK_PIC_LIBRARY = [".pic.lo"]
-SHARED_LIBRARY = [".so", ".dylib", ".dll"]
+SHARED_LIBRARY = [".so", ".dylib", ".dll", ".wasm"]
+INTERFACE_SHARED_LIBRARY = [".ifso", ".tbd", ".lib", ".dll.a"]
 OBJECT_FILE = [".o", ".obj"]
 PIC_OBJECT_FILE = [".pic.o"]
 
@@ -539,12 +540,13 @@
 def _is_valid_shared_library_name(shared_library_name):
     if (shared_library_name.endswith(".so") or
         shared_library_name.endswith(".dll") or
-        shared_library_name.endswith(".dylib")):
+        shared_library_name.endswith(".dylib") or
+        shared_library_name.endswith(".wasm")):
         return True
 
     return _is_versioned_shared_library_extension_valid(shared_library_name)
 
-_SHARED_LIBRARY_EXTENSIONS = ["so", "dll", "dylib"]
+_SHARED_LIBRARY_EXTENSIONS = ["so", "dll", "dylib", "wasm"]
 
 def _is_valid_shared_library_artifact(shared_library):
     if (shared_library.extension in _SHARED_LIBRARY_EXTENSIONS):
diff --git a/src/test/java/com/google/devtools/build/lib/rules/cpp/StarlarkCcCommonTest.java b/src/test/java/com/google/devtools/build/lib/rules/cpp/StarlarkCcCommonTest.java
index 06e7275..d0228c1 100755
--- a/src/test/java/com/google/devtools/build/lib/rules/cpp/StarlarkCcCommonTest.java
+++ b/src/test/java/com/google/devtools/build/lib/rules/cpp/StarlarkCcCommonTest.java
@@ -5296,10 +5296,13 @@
             "'a.pic.o' does not have any of the allowed extensions .a, .lib, .pic.a or .rlib");
     assertThat(e)
         .hasMessageThat()
-        .contains("'a.ifso' does not have any of the allowed extensions .so, .dylib, .dll or .pyd");
+        .contains(
+            "'a.ifso' does not have any of the allowed extensions .so, .dylib, .dll, .pyd or"
+                + " .wasm");
     assertThat(e)
         .hasMessageThat()
-        .contains("'a.lib' does not have any of the allowed extensions .so, .dylib, .dll or .pyd");
+        .contains(
+            "'a.lib' does not have any of the allowed extensions .so, .dylib, .dll, .pyd or .wasm");
     assertThat(e)
         .hasMessageThat()
         .contains(