diff --git a/breaking/entrypoint.sh b/breaking/entrypoint.sh
index bc65028..e5d885d 100755
--- a/breaking/entrypoint.sh
+++ b/breaking/entrypoint.sh
@@ -1,7 +1,24 @@
 #!/bin/sh
 set -e
 
-source $GITHUB_WORKSPACE/common/common.sh
+write_output () {
+    local output="$1"
+    if [ -n "$output_to_file" ]; then
+        local file_output="$2"
+        if [ -z "$file_output" ]; then
+            file_output=$output
+        fi
+        echo "$file_output" >> "$output_to_file"
+    fi
+    # github-action limits output to 1MB
+    # we count bytes because unicode has multibyte characters
+    size=$(echo "$output" | wc -c)
+    if [ "$size" -ge "1000000" ]; then
+        echo "WARN: diff exceeds the 1MB limit, truncating output..." >&2
+        output=$(echo "$output" | head -c 1000000)
+    fi
+    echo "$output" >>"$GITHUB_OUTPUT"
+}
 
 readonly base="$1"
 readonly revision="$2"
diff --git a/changelog/entrypoint.sh b/changelog/entrypoint.sh
index d6723ca..1b0767c 100755
--- a/changelog/entrypoint.sh
+++ b/changelog/entrypoint.sh
@@ -1,7 +1,24 @@
 #!/bin/sh
 set -e
 
-source $GITHUB_WORKSPACE/common/common.sh
+write_output () {
+    local output="$1"
+    if [ -n "$output_to_file" ]; then
+        local file_output="$2"
+        if [ -z "$file_output" ]; then
+            file_output=$output
+        fi
+        echo "$file_output" >> "$output_to_file"
+    fi
+    # github-action limits output to 1MB
+    # we count bytes because unicode has multibyte characters
+    size=$(echo "$output" | wc -c)
+    if [ "$size" -ge "1000000" ]; then
+        echo "WARN: diff exceeds the 1MB limit, truncating output..." >&2
+        output=$(echo "$output" | head -c 1000000)
+    fi
+    echo "$output" >>"$GITHUB_OUTPUT"
+}
 
 readonly base="$1"
 readonly revision="$2"
diff --git a/common/common.sh b/common/common.sh
deleted file mode 100644
index 15d555c..0000000
--- a/common/common.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-write_output () {
-    local output="$1"
-    if [ -n "$output_to_file" ]; then
-        local file_output="$2"
-        if [ -z "$file_output" ]; then
-            file_output=$output
-        fi
-        echo "$file_output" >> "$output_to_file"
-    fi
-    # github-action limits output to 1MB
-    # we count bytes because unicode has multibyte characters
-    size=$(echo "$output" | wc -c)
-    if [ "$size" -ge "1000000" ]; then
-        echo "WARN: diff exceeds the 1MB limit, truncating output..." >&2
-        output=$(echo "$output" | head -c 1000000)
-    fi
-    echo "$output" >>"$GITHUB_OUTPUT"
-}
\ No newline at end of file
diff --git a/diff/entrypoint.sh b/diff/entrypoint.sh
index 6a75583..67127ed 100755
--- a/diff/entrypoint.sh
+++ b/diff/entrypoint.sh
@@ -1,7 +1,24 @@
 #!/bin/sh
 set -e
 
-source $GITHUB_WORKSPACE/common/common.sh
+write_output () {
+    local output="$1"
+    if [ -n "$output_to_file" ]; then
+        local file_output="$2"
+        if [ -z "$file_output" ]; then
+            file_output=$output
+        fi
+        echo "$file_output" >> "$output_to_file"
+    fi
+    # github-action limits output to 1MB
+    # we count bytes because unicode has multibyte characters
+    size=$(echo "$output" | wc -c)
+    if [ "$size" -ge "1000000" ]; then
+        echo "WARN: diff exceeds the 1MB limit, truncating output..." >&2
+        output=$(echo "$output" | head -c 1000000)
+    fi
+    echo "$output" >>"$GITHUB_OUTPUT"
+}
 
 readonly base="$1"
 readonly revision="$2"