diff --git a/.githooks/pre-commit b/.githooks/pre-commit
index ab3e81f1a..6b884fc62 100755
--- a/.githooks/pre-commit
+++ b/.githooks/pre-commit
@@ -3,7 +3,6 @@
 set -eux
 
 ./scripts/fmt.sh --pre-commit
-./scripts/hash.sh --pre-commit
 ./scripts/clippy.sh --pre-commit
 ./scripts/documentation.sh --pre-commit
 ./scripts/deny.sh --pre-commit
diff --git a/pumpkin-crates/core/clippy.toml b/pumpkin-crates/core/clippy.toml
new file mode 100644
index 000000000..9d3ca24f5
--- /dev/null
+++ b/pumpkin-crates/core/clippy.toml
@@ -0,0 +1,7 @@
+disallowed-types = [
+    { path = "std::collections::HashSet", reason = "use pumpkin_solver::containers::HashSet" },
+    { path = "std::collections::HashMap", reason = "use pumpkin_solver::containers::HashMap" },
+    { path = "rand::RngCore", reason = "use pumpkin_solver::basic_types::Random" },
+    { path = "rand::Rng", reason = "use pumpkin_solver::basic_types::Random" },
+    { path = "rand::SeedableRng", reason = "use pumpkin_solver::basic_types::Random" },
+]
diff --git a/pumpkin-crates/core/src/basic_types/random.rs b/pumpkin-crates/core/src/basic_types/random.rs
index 2ce8744ef..7786fe708 100644
--- a/pumpkin-crates/core/src/basic_types/random.rs
+++ b/pumpkin-crates/core/src/basic_types/random.rs
@@ -1,7 +1,15 @@
 use std::fmt::Debug;
 use std::ops::Range;
 
+#[allow(
+    clippy::disallowed_types,
+    reason = "we implement our random generator using rand"
+)]
 use rand::Rng;
+#[allow(
+    clippy::disallowed_types,
+    reason = "we implement our random generator using rand"
+)]
 use rand::SeedableRng;
 
 use crate::pumpkin_assert_moderate;
@@ -74,6 +82,10 @@ pub trait Random: Debug {
 // We provide a blanket implementation of the trait for any type which implements `SeedableRng`,
 // `Rng` and `Debug` to ensure that we can use any "regular" random generator where we expect an
 // implementation of Random.
+#[allow(
+    clippy::disallowed_types,
+    reason = "we implement our random generator using rand"
+)]
 impl<T> Random for T
 where
     T: SeedableRng + Rng + Debug,
diff --git a/pumpkin-crates/core/src/containers/mod.rs b/pumpkin-crates/core/src/containers/mod.rs
index 0bfc82666..f0abaef64 100644
--- a/pumpkin-crates/core/src/containers/mod.rs
+++ b/pumpkin-crates/core/src/containers/mod.rs
@@ -11,6 +11,8 @@ pub use keyed_vec::*;
 pub(crate) use sparse_set::*;
 
 /// [`std::collections::HashMap`] that defaults to a deterministic hasher.
+#[allow(clippy::disallowed_types, reason = "this is how we define our HashMap")]
 pub type HashMap<K, V, Hasher = FnvBuildHasher> = std::collections::HashMap<K, V, Hasher>;
 /// [`std::collections::HashSet`] that defaults to a deterministic hasher.
+#[allow(clippy::disallowed_types, reason = "this is how we define our HashSet")]
 pub type HashSet<K, Hasher = FnvBuildHasher> = std::collections::HashSet<K, Hasher>;
diff --git a/pumpkin-crates/core/src/engine/constraint_satisfaction_solver.rs b/pumpkin-crates/core/src/engine/constraint_satisfaction_solver.rs
index 9d75a5b14..a05b076f0 100644
--- a/pumpkin-crates/core/src/engine/constraint_satisfaction_solver.rs
+++ b/pumpkin-crates/core/src/engine/constraint_satisfaction_solver.rs
@@ -5,6 +5,10 @@ use std::collections::VecDeque;
 use std::fmt::Debug;
 use std::time::Instant;
 
+#[allow(
+    clippy::disallowed_types,
+    reason = "any rand generator is a valid implementation of Random"
+)]
 use rand::SeedableRng;
 use rand::rngs::SmallRng;
 
diff --git a/scripts/hash.sh b/scripts/hash.sh
deleted file mode 100755
index 66b988005..000000000
--- a/scripts/hash.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-
-set -ux
-
-results=$(grep --recursive --files-with-matches --exclude="hash_structures.rs" --fixed-strings 'std::collections::Hash' ./pumpkin-lib/)
-num_results=$(echo "$results" | wc --lines)
-if [ "$results" != "" ]; then
-    echo -e "\033[0;31mHash-based structures from the standard library found in file(s):\n$results\033[0m"
-    echo -e "\033[0;31mPlease do not used hash-based structures from the standard library, hash-based structures in Rust do not provide any guarantees on the order which leads to poor reproducibility (see /pumpkin-lib/src/basic_types/hash_structures.rs)\033[0m"
-    exit 1
-else
-    exit 0
-fi
\ No newline at end of file