diff --git a/libraries/base/cbits/inputReady.c b/libraries/base/cbits/inputReady.c
index 3f636c6b2875102e71e4d67fce2b4221c723fba2..d1c1da2e4c4986ae3cff4987d86dfbc83d7eabaf 100644
--- a/libraries/base/cbits/inputReady.c
+++ b/libraries/base/cbits/inputReady.c
@@ -153,6 +153,9 @@ compute_WaitForSingleObject_timeout(bool infinite, Time remaining)
 int
 fdReady(int fd, bool write, int64_t msecs, bool isSock)
 {
+#if defined(wasm32_HOST_ARCH)
+    return 1;
+#else
     bool infinite = msecs < 0;
 
     // if we need to track the time then record the end time in case we are
@@ -477,4 +480,5 @@ fdReady(int fd, bool write, int64_t msecs, bool isSock)
         }
     }
 #endif
+#endif // wasm32_HOST_ARCH
 }
diff --git a/libraries/base/changelog.md b/libraries/base/changelog.md
index 538a81ba9c44ee0655cf9a20991e267432913218..2d9973a8d36a0dd1cfc1c2613a8c812c2575ac50 100644
--- a/libraries/base/changelog.md
+++ b/libraries/base/changelog.md
@@ -35,6 +35,8 @@
 
   * Add more instances for `Compose`: `Fractional`, `RealFrac`, `Floating`, `RealFloat` ([CLC proposal #226](https://github.com/haskell/core-libraries-committee/issues/226))
 
+  * Treat all FDs as "nonblocking" on wasm32 ([CLC proposal #234](https://github.com/haskell/core-libraries-committee/issues/234))
+
 ## 4.19.0.0 *October 2023*
   * Add `{-# WARNING in "x-partial" #-}` to `Data.List.{head,tail}`.
     Use `{-# OPTIONS_GHC -Wno-x-partial #-}` to disable it.
diff --git a/libraries/base/tests/IO/all.T b/libraries/base/tests/IO/all.T
index 946d8ea510bd3b8c0f45df417693c0327d41fec4..5c1342014512c9992936ded6f0a5aeea423d39cd 100644
--- a/libraries/base/tests/IO/all.T
+++ b/libraries/base/tests/IO/all.T
@@ -63,7 +63,7 @@ test('hSetBuffering004', set_stdin('hSetBuffering004.hs'), compile_and_run, ['']
 test('ioeGetErrorString001', normal, compile_and_run, ['-cpp'])
 test('ioeGetFileName001',    normal, compile_and_run, ['-cpp'])
 test('ioeGetHandle001',      normal, compile_and_run, ['-cpp'])
-test('isEOF001', [extra_run_opts('</dev/null'), when(arch('wasm32'), fragile(23275))], compile_and_run, [''])
+test('isEOF001', [extra_run_opts('</dev/null')], compile_and_run, [''])
 
 test('misc001', [extra_run_opts('misc001.hs misc001.out')], compile_and_run,
      [''])
@@ -76,7 +76,7 @@ test('openFile005', js_broken(22261), compile_and_run, [''])
 test('openFile006', [], compile_and_run, [''])
 test('openFile007', js_broken(22261), compile_and_run, [''])
 test('openFile008', [cmd_prefix('ulimit -n 1024; ')], compile_and_run, [''])
-test('openFile009', [when(arch('wasm32'), fragile(23284))], compile_and_run, [''])
+test('openFile009', [], compile_and_run, [''])
 
 test('putStr001',    normal, compile_and_run, [''])
 test('readFile001', js_broken(22261), compile_and_run, [''])
@@ -155,7 +155,6 @@ test('encodingerror001', normal, compile_and_run, [''])
 
 # Requires use of the FD interface which is not supported under WINIO
 test('T4808', [when(opsys('mingw32'), skip)
-              , when(arch('wasm32'), fragile(23284))
               ,fragile_for(16909, concurrent_ways), exit_code(1)]
               , compile_and_run, [''])
 test('T4895', normal, compile_and_run, [''])
diff --git a/libraries/base/tests/all.T b/libraries/base/tests/all.T
index 1a7ebed8aafe2a15cd5a6df361a864f291408d00..1f3d92c1191cb099b7bb29830f102b875d937d65 100644
--- a/libraries/base/tests/all.T
+++ b/libraries/base/tests/all.T
@@ -175,9 +175,8 @@ test('T7457', normal, compile_and_run, [''])
 test('T7773',
      [when(opsys('mingw32'), skip),
       js_broken(22261),
-      expect_broken_for(23272, ['ghci-opt']), # unclear
-      when(arch('wasm32'),
-      fragile(23275))],
+      expect_broken_for(23272, ['ghci-opt']) # unclear
+     ],
      compile_and_run,
      [''])
 # Andreas says that T7773 will not (and should not) work on Windows
diff --git a/testsuite/tests/codeGen/should_run/all.T b/testsuite/tests/codeGen/should_run/all.T
index 5d4e36a3ae73ea637a3c9a00c3c57ea5e4b1b09c..4bfa5b3be465cea9544c2409648f7de12f152d7a 100644
--- a/testsuite/tests/codeGen/should_run/all.T
+++ b/testsuite/tests/codeGen/should_run/all.T
@@ -29,7 +29,7 @@ test('cgrun021', extra_ways(['nursery_chunks']), compile_and_run, [''])
 test('cgrun022', normal, compile_and_run, [''])
 test('cgrun024', normal, compile_and_run, [''])
 test('cgrun025',
-     [ omit_ghci, extra_run_opts('cgrun025.hs < /dev/null'), exit_code(1), when(arch('wasm32'), fragile(23275))],
+     [ omit_ghci, extra_run_opts('cgrun025.hs < /dev/null'), exit_code(1) ],
      compile_and_run, [''])
 test('cgrun026', normal, compile_and_run, [''])
 test('cgrun027', normal, compile_and_run, [''])