diff --git a/Dockerfile b/Dockerfile
index 573c703..1489f55 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM drone/ca-certs
 
-ADD release/linux/amd64/drone /bin/
+COPY release/linux/amd64/drone /bin/
 
 ENTRYPOINT ["/bin/drone"]
diff --git a/Dockerfile.alpine b/Dockerfile.alpine
index d498d81..0a370c7 100644
--- a/Dockerfile.alpine
+++ b/Dockerfile.alpine
@@ -2,6 +2,6 @@ FROM alpine:3.7
 
 RUN apk add -U --no-cache ca-certificates
 
-ADD release/linux/amd64/drone /bin/
+COPY release/linux/amd64/drone /bin/
 
 ENTRYPOINT ["/bin/drone"]
diff --git a/Dockerfile.arm b/Dockerfile.arm
index 86a037d..1091c58 100644
--- a/Dockerfile.arm
+++ b/Dockerfile.arm
@@ -1,5 +1,5 @@
 FROM drone/ca-certs
 
-ADD release/linux/arm/drone /bin/
+COPY release/linux/arm/drone /bin/
 
 ENTRYPOINT ["/bin/drone"]
diff --git a/Dockerfile.arm64 b/Dockerfile.arm64
index 7b2d367..1ce230f 100644
--- a/Dockerfile.arm64
+++ b/Dockerfile.arm64
@@ -1,6 +1,6 @@
 FROM drone/ca-certs
 
-ADD release/linux/arm64/drone /bin/
+COPY release/linux/arm64/drone /bin/
 
 ENTRYPOINT ["/bin/drone"]