diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 54fce76..a21dd3a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -137,27 +137,10 @@ jobs:
         if: matrix.target != 'x86_64-unknown-linux-gnu' && matrix.target != 'x86_64-apple-darwin' && matrix.target != 'aarch64-apple-darwin'
         run: cross build --release --target ${{ matrix.target }}
 
-      - name: Install UPX
-        run: |
-          if [ "${{ runner.os }}" = "Linux" ]; then
-            # Download and install UPX for Linux
-            curl -L https://github.com/upx/upx/releases/download/v4.2.1/upx-4.2.1-amd64_linux.tar.xz | tar xJ
-            sudo mv upx-4.2.1-amd64_linux/upx /usr/local/bin/
-          elif [ "${{ runner.os }}" = "macOS" ]; then
-            # Install UPX via Homebrew on macOS
-            brew install upx
-          fi
-        shell: bash
-
-      - name: Rename and compress binary
+      - name: Rename binary
         run: |
           if [ -f "target/${{ matrix.target }}/release/fls" ]; then
             cp "target/${{ matrix.target }}/release/fls" "${{ matrix.artifact_name }}"
-            echo "Original size:"
-            ls -lh "${{ matrix.artifact_name }}"
-            # Compress with UPX
-            upx --best --lzma "${{ matrix.artifact_name }}" || echo "UPX compression failed, using uncompressed binary"
-            echo "Compressed size:"
             ls -lh "${{ matrix.artifact_name }}"
           fi
         shell: bash
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 59a090f..2cd053e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -78,41 +78,12 @@ jobs:
         if: matrix.target != 'x86_64-unknown-linux-gnu' && matrix.target != 'x86_64-apple-darwin' && matrix.target != 'aarch64-apple-darwin'
         run: cross build --release --target ${{ matrix.target }}
 
-      - name: Install UPX
-        run: |
-          if [ "${{ runner.os }}" = "Linux" ]; then
-            # Download and install UPX for Linux
-            curl -L https://github.com/upx/upx/releases/download/v4.2.1/upx-4.2.1-amd64_linux.tar.xz | tar xJ
-            sudo mv upx-4.2.1-amd64_linux/upx /usr/local/bin/
-          elif [ "${{ runner.os }}" = "macOS" ]; then
-            # Install UPX via Homebrew on macOS
-            brew install upx
-          fi
-          upx --version
-        shell: bash
-
-      - name: Prepare and compress binary
+      - name: Prepare binary
         run: |
           if [ -f "target/${{ matrix.target }}/release/fls" ]; then
             cp "target/${{ matrix.target }}/release/fls" "${{ matrix.artifact_name }}"
-            
-            echo "📦 Original binary size:"
             ls -lh "${{ matrix.artifact_name }}"
-            original_size=$(stat -f%z "${{ matrix.artifact_name }}" 2>/dev/null || stat -c%s "${{ matrix.artifact_name }}")
-            
-            # Compress with UPX
-            echo "🗜️  Compressing with UPX --best --lzma..."
-            if upx --best --lzma "${{ matrix.artifact_name }}"; then
-              echo "✅ Compression successful!"
-              ls -lh "${{ matrix.artifact_name }}"
-              compressed_size=$(stat -f%z "${{ matrix.artifact_name }}" 2>/dev/null || stat -c%s "${{ matrix.artifact_name }}")
-              ratio=$(awk "BEGIN {printf \"%.1f\", ($original_size - $compressed_size) * 100 / $original_size}")
-              echo "📉 Size reduction: ${ratio}%"
-            else
-              echo "⚠️  UPX compression failed, using uncompressed binary"
-            fi
-            
-            # Create checksum
+
             if command -v sha256sum &> /dev/null; then
               sha256sum "${{ matrix.artifact_name }}" > "${{ matrix.artifact_name }}.sha256"
             else
diff --git a/Containerfile b/Containerfile
index a153120..c9a8325 100644
--- a/Containerfile
+++ b/Containerfile
@@ -10,7 +10,6 @@ RUN apt-get update && apt-get install -y \
     make \
     perl \
     file \
-    upx-ucl \
     && rm -rf /var/lib/apt/lists/*
 
 # Add ARM64 glibc target
@@ -50,12 +49,5 @@ COPY src src
 # Build the actual project (dependencies are already cached)
 RUN cargo build --release --target aarch64-unknown-linux-gnu
 
-# Compress the binary with UPX for smaller size
-# Using --best for maximum compression, --lzma for best algorithm
-# UPX compresses in-place, so the original binary will be compressed
-RUN cd target/aarch64-unknown-linux-gnu/release && \
-    upx --best --lzma fls || \
-    echo "UPX compression failed, using uncompressed binary"
-
-# The compressed binary will be in target/aarch64-unknown-linux-gnu/release/fls
+# The binary will be in target/aarch64-unknown-linux-gnu/release/fls
 
diff --git a/Makefile b/Makefile
index 48c571b..a2a344f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 # Makefile for fls - ARM64 static builds
 
-.PHONY: all build clean test arm64-static lint fmt clippy check help compress-upx
+.PHONY: all build clean test arm64-static lint fmt clippy check help
 
 # Default target
 all: build
@@ -9,10 +9,6 @@ all: build
 build:
 	cargo build --release
 
-# Build and compress for native target
-build-compressed: build
-	@$(MAKE) compress-upx BINARY=target/release/fls OUTPUT=fls-native
-
 # Build for ARM64 static (musl) using cross
 arm64-static:
 	rustup target add aarch64-unknown-linux-musl
@@ -24,10 +20,6 @@ arm64-static:
 		ls -lh fls-arm64-static; \
 	fi
 
-# Build ARM64 static and compress with UPX
-arm64-static-compressed: arm64-static
-	@$(MAKE) compress-upx BINARY=fls-arm64-static OUTPUT=fls-arm64-static
-
 # Build for all targets (native + ARM64 static)
 all-targets:
 	./build.sh
@@ -59,39 +51,6 @@ check:
 	@echo "Running cargo check..."
 	cargo check --all-targets
 
-# Compress a binary with UPX
-# Usage: make compress-upx BINARY=path/to/binary OUTPUT=output-name
-compress-upx:
-	@if [ -z "$(BINARY)" ] || [ -z "$(OUTPUT)" ]; then \
-		echo "Error: BINARY and OUTPUT must be specified"; \
-		echo "Usage: make compress-upx BINARY=path/to/binary OUTPUT=output-name"; \
-		exit 1; \
-	fi
-	@if ! command -v upx >/dev/null 2>&1; then \
-		echo "Error: UPX not found. Install it first:"; \
-		echo "  macOS: brew install upx"; \
-		echo "  Linux: apt-get install upx-ucl or download from https://github.com/upx/upx/releases"; \
-		exit 1; \
-	fi
-	@if [ -f "$(BINARY)" ]; then \
-		if [ "$(BINARY)" != "$(OUTPUT)" ]; then \
-			cp "$(BINARY)" "$(OUTPUT)"; \
-		fi; \
-		echo "📦 Original size:"; \
-		ls -lh "$(OUTPUT)"; \
-		echo "🗜️  Compressing with UPX --best --lzma..."; \
-		if upx --best --lzma "$(OUTPUT)"; then \
-			echo "✅ Compression successful!"; \
-			ls -lh "$(OUTPUT)"; \
-		else \
-			echo "⚠️  UPX compression failed"; \
-			exit 1; \
-		fi; \
-	else \
-		echo "Error: Binary $(BINARY) not found"; \
-		exit 1; \
-	fi
-
 # Clean build artifacts
 clean:
 	cargo clean
@@ -111,14 +70,9 @@ help:
 	@echo ""
 	@echo "Build targets:"
 	@echo "  build                    - Build for native target"
-	@echo "  build-compressed         - Build for native target and compress with UPX"
 	@echo "  arm64-static             - Build for ARM64 static (musl)"
-	@echo "  arm64-static-compressed  - Build for ARM64 static and compress with UPX"
 	@echo "  all-targets              - Build for native + ARM64 static"
 	@echo ""
-	@echo "Compression:"
-	@echo "  compress-upx             - Compress a binary with UPX (requires BINARY and OUTPUT args)"
-	@echo ""
 	@echo "Testing and Quality:"
 	@echo "  test                     - Run tests"
 	@echo "  lint                     - Run all lints (format check + clippy)"