diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 24accc6..7bd78d1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -86,8 +86,9 @@ jobs:
     - name: Upload coverage to Codecov
       uses: codecov/codecov-action@v4
       with:
+        token: ${{ secrets.CODECOV_TOKEN }}
         file: lcov.info
-        fail_ci_if_error: true
+        fail_ci_if_error: false
 
   security:
     name: Security Audit
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 710e44f..b875623 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Fixed
+- **Minimal Versions CI Compatibility**: Updated minimum dependency versions to ensure compatibility with `cargo minimal-versions` testing on Rust nightly
+  - `hashbrown` ≥ 0.14.5 (fixes ahash stdsimd feature issue with modern nightly Rust)
+  - `lazy_static` ≥ 1.3.0 (fixes macro export issues with sharded-slab)
+  - `anyhow` ≥ 1.0.40 (fixes backtrace trait compatibility)
+  - `thiserror` ≥ 1.0.20 (ensures full #[from] attribute support)
+  - `chrono` ≥ 0.4.20 (ensures DateTime::default() implementation)
+  - `tracing-subscriber` ≥ 0.3.18 (uses compatible sharded-slab version)
+
 ## [0.1.0] - 2024-08-16
 
 🎉 **Initial release of Rust Guardian - Production-ready dynamic code quality enforcement**
diff --git a/Cargo.toml b/Cargo.toml
index d4827f0..16059c4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rust-guardian"
-version = "0.1.0"
+version = "0.1.1"
 edition = "2021"
 authors = ["The Rust Guardian Team"]
 description = "Dynamic code quality enforcement preventing incomplete or placeholder code"
@@ -50,22 +50,30 @@ glob = "0.3"
 notify = { version = "6.1", features = ["macos_kqueue"] }
 
 # Error handling
-anyhow = "1.0"
-thiserror = "1.0"
+anyhow = "1.0.40"  # Minimum version for proper backtrace support with modern Rust
+thiserror = "1.0.20"  # Minimum version for full #[from] attribute support
 
 # Logging
 tracing = "0.1"
-tracing-subscriber = { version = "0.3", features = ["env-filter", "json"] }
+tracing-subscriber = { version = "0.3.18", features = ["env-filter", "json"] }
 
 # Utilities
-chrono = { version = "0.4", features = ["serde"] }
+chrono = { version = "0.4.20", features = ["serde"] }  # Minimum version with DateTime::default()
 uuid = { version = "1.8", features = ["v4"] }
 sha2 = "0.10"
 
+# Ensure minimum version to avoid compatibility issues on nightly
+# lazy_static 1.3.0+ properly exports macros needed by sharded-slab (used by tracing-subscriber)
+lazy_static = "1.3"
+
 # Optional performance optimizations
 memmap2 = { version = "0.9", optional = true }
 lru = { version = "0.12", optional = true }
 
+# Ensure minimum version of hashbrown to avoid ahash stdsimd issue on nightly
+# hashbrown 0.14.5+ requires ahash 0.8.7+ which is compatible with modern Rust nightly
+hashbrown = { version = "0.14.5", optional = true }
+
 # Terminal output
 crossterm = { version = "0.27", optional = true }
 colored = { version = "2.1", optional = true }
@@ -83,7 +91,7 @@ default = ["cli", "cache", "colors"]
 cli = ["crossterm", "colored"]
 
 # Performance caching
-cache = ["lru", "memmap2"]
+cache = ["lru", "hashbrown", "memmap2"]
 
 # Colored terminal output
 colors = ["colored", "crossterm"]
diff --git a/README.md b/README.md
index 4a5059e..f7ff496 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,6 @@ Rust Guardian is a self-contained, production-ready crate for comprehensive code
 - **📊 Multiple Output Formats**: Human, JSON, JUnit, SARIF, GitHub Actions
 - **⚙️ Flexible Configuration**: YAML-based pattern customization
 - **🔄 Watch Mode**: Real-time validation during development
-- **🎯 Zero Dependencies**: Self-contained with no external crate dependencies
 
 ## Quick Start
 
diff --git a/src/main.rs b/src/main.rs
index f410edf..07479b7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -16,7 +16,7 @@ use std::process;
 /// Rust Guardian - Dynamic code quality enforcement
 #[derive(Parser)]
 #[command(name = "rust-guardian")]
-#[command(version = "0.1.0")]
+#[command(version = "0.1.1")]
 #[command(about = "Dynamic code quality enforcement preventing incomplete or placeholder code")]
 #[command(
     long_about = "Rust Guardian analyzes code for quality violations, placeholder implementations, and architectural compliance. Designed for autonomous agent workflows and CI/CD integration."
diff --git a/src/report/mod.rs b/src/report/mod.rs
index 34c6c23..d036a75 100644
--- a/src/report/mod.rs
+++ b/src/report/mod.rs
@@ -673,7 +673,7 @@ impl ReportFormatter {
                 "tool": {
                     "driver": {
                         "name": "rust-guardian",
-                        "version": "0.1.0",
+                        "version": "0.1.1",
                         "informationUri": "https://github.com/cloudfunnels/rust-guardian"
                     }
                 },