diff --git a/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp b/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp
index 8c6de49b61..3d6bdffa55 100644
--- a/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp
+++ b/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp
@@ -280,9 +280,19 @@ bool SignedBigInteger::operator<(const SignedBigInteger& other) const
     return m_unsigned_data < other.m_unsigned_data;
 }
 
+bool SignedBigInteger::operator<=(const SignedBigInteger& other) const
+{
+    return *this < other || *this == other;
+}
+
 bool SignedBigInteger::operator>(const SignedBigInteger& other) const
 {
     return *this != other && !(*this < other);
 }
 
+bool SignedBigInteger::operator>=(const SignedBigInteger& other) const
+{
+    return !(*this < other);
+}
+
 }
diff --git a/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.h b/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.h
index b3adcdb8bb..099348bfd7 100644
--- a/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.h
+++ b/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.h
@@ -121,7 +121,9 @@ public:
     bool operator==(const SignedBigInteger& other) const;
     bool operator!=(const SignedBigInteger& other) const;
     bool operator<(const SignedBigInteger& other) const;
+    bool operator<=(const SignedBigInteger& other) const;
     bool operator>(const SignedBigInteger& other) const;
+    bool operator>=(const SignedBigInteger& other) const;
 
     bool operator==(const UnsignedBigInteger& other) const;
     bool operator!=(const UnsignedBigInteger& other) const;