diff --git a/package.yaml b/package.yaml
index 5601e11..2b630d5 100644
--- a/package.yaml
+++ b/package.yaml
@@ -85,7 +85,7 @@ internal-libraries:
     dependencies:
       - mcsp-algorithms
       - directory >= 1.3.8.1 && < 2
-      - filepath >= 1.4.100.1 && < 2
+      - filepath >= 1.4.100.4 && < 2
       - MonadRandom >= 0.6 && < 1
       - process >= 1.6.17 && < 2
       - pcg-random >= 0.1.4 && < 1
@@ -105,7 +105,7 @@ tests:
       - tasty-quickcheck >= 0.10.3 && < 1
       # these dependencies are repeated here for Haskell Language Server to work in 'mcsp-test-lib'
       - directory >= 1.3.8.1 && < 2
-      - filepath >= 1.4.100.1 && < 2
+      - filepath >= 1.4.100.4 && < 2
       - MonadRandom >= 0.6 && < 1
       - process >= 1.6.17 && < 2
       - pcg-random >= 0.1.4 && < 1
diff --git a/stack.yaml b/stack.yaml
index 6196d08..6dd3b71 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -15,7 +15,9 @@
 #
 # resolver: ./custom-snapshot.yaml
 # resolver: https://example.com/snapshots/2018-01-01.yaml
-resolver: nightly-2023-09-25
+#
+# See https://github.com/commercialhaskell/stackage-snapshots/tree/master/nightly
+resolver: nightly-2023-10-01
 
 # User packages to be built.
 # Various formats can be used as shown in the example below.
@@ -28,6 +30,7 @@ resolver: nightly-2023-09-25
 #   - wai
 packages:
   - .
+
 # Dependency packages to be pulled from upstream that are not in the resolver.
 # These entries can reference officially published versions as well as
 # forks / in-progress versions pinned to a git hash. For example:
@@ -52,8 +55,7 @@ extra-deps:
 # system-ghc: true
 
 # Require a specific version of Stack, using version ranges
-# require-stack-version: -any # Default
-require-stack-version: ">= 2.11"
+require-stack-version: ">= 2.13"
 
 # Override the architecture used by Stack, especially useful on Windows
 # arch: i386
diff --git a/stack.yaml.lock b/stack.yaml.lock
index 6f63563..ea2b5f8 100644
--- a/stack.yaml.lock
+++ b/stack.yaml.lock
@@ -12,9 +12,9 @@ packages:
     original:
       hackage: doctest-0.22.1
   - completed:
-      hackage: tasty-1.5@sha256:c62c96da1e9d65bf61ce583e9f7085eed1daeb62a45f3106ca252bf9ef87025b,2763
+      hackage: tasty-1.5@sha256:2dc91101339814be9913846ca8c424d1c3eccfefb27c6335f3fea2af40a3d2e4,2870
       pantry-tree:
-        sha256: 7e9f57606982a8414be1a48a3fe16a29f2923b0f87c265a6ce0ab74944059d95
+        sha256: 0a7c186a9aab2f01a3bcdfad12f107e07ca2c414e93266d883ec770616f79448
         size: 1944
     original:
       hackage: tasty-1.5
@@ -27,7 +27,7 @@ packages:
       hackage: tasty-quickcheck-0.10.3
 snapshots:
   - completed:
-      sha256: 682574fdbde29718a8c5bc4a16e534b2e7c821922bdb46c1daf8adf373b28e55
-      size: 669535
-      url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/nightly/2023/9/25.yaml
-    original: nightly-2023-09-25
+      sha256: 5263c5cd05907ff6625e22009db2774a9d7d88fc713d8e41619b284a132f5923
+      size: 675308
+      url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/nightly/2023/10/1.yaml
+    original: nightly-2023-10-01