diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 6b9742392bb..f6bf5ec5b4f 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -330,21 +330,21 @@ jobs:
         env:
           RUSTPYTHON_SKIP_ENV_POLLUTERS: true
         run: target/release/rustpython -m test -j 1 -u all --slowest --fail-env-changed --timeout 600 -v -x ${{ env.PLATFORM_INDEPENDENT_TESTS }}
-        timeout-minutes: 45
+        timeout-minutes: 60
 
       - if: runner.os == 'macOS'
         name: run cpython platform-dependent tests (MacOS)
         env:
           RUSTPYTHON_SKIP_ENV_POLLUTERS: true
         run: target/release/rustpython -m test -j 1 --slowest --fail-env-changed --timeout 600 -v -x ${{ env.PLATFORM_INDEPENDENT_TESTS }}
-        timeout-minutes: 45
+        timeout-minutes: 50
 
       - if: runner.os == 'Windows'
         name: run cpython platform-dependent tests (windows partial - fixme)
         env:
           RUSTPYTHON_SKIP_ENV_POLLUTERS: true
         run: target/release/rustpython -m test -j 1 --slowest --fail-env-changed --timeout 600 -v -x ${{ env.PLATFORM_INDEPENDENT_TESTS }} ${{ env.WINDOWS_SKIPS }}
-        timeout-minutes: 45
+        timeout-minutes: 50
 
       - if: runner.os == 'Linux'
         name: run cpython tests to check if env polluters have stopped polluting (Common/Linux)
diff --git a/crates/vm/src/dict_inner.rs b/crates/vm/src/dict_inner.rs
index fe5f40b8f33..47fefe65af3 100644
--- a/crates/vm/src/dict_inner.rs
+++ b/crates/vm/src/dict_inner.rs
@@ -594,9 +594,13 @@ impl<T: Clone> Dict<T> {
         let ret = 'outer: loop {
             let (entry_key, ret) = {
                 let inner = lock.take().unwrap_or_else(|| self.read());
-                let idxs = idxs.get_or_insert_with(|| {
-                    GenIndexes::new(hash_value, (inner.indices.len() - 1) as i64)
-                });
+                let mask = (inner.indices.len() - 1) as i64;
+                let idxs = idxs.get_or_insert_with(|| GenIndexes::new(hash_value, mask));
+                if idxs.mask != mask {
+                    // Dict was resized since last probe, restart
+                    *idxs = GenIndexes::new(hash_value, mask);
+                    free_slot = None;
+                }
                 loop {
                     let index_index = idxs.next();
                     let index_entry = *unsafe {