diff --git a/7.4/Dockerfile b/7.4/Dockerfile
index f63dcd0..b7b3d3d 100644
--- a/7.4/Dockerfile
+++ b/7.4/Dockerfile
@@ -88,7 +88,7 @@ RUN set -eux; \
 	\
 	apk del --no-network .fetch-deps
 
-COPY docker-php-source /usr/local/bin/
+COPY docker-php-source /usr/local/bin/docker-php-source
 
 RUN set -eux; \
 	apk add --no-cache --virtual .build-deps \
@@ -110,6 +110,7 @@ RUN set -eux; \
 		CPPFLAGS="$PHP_CPPFLAGS" \
 		LDFLAGS="$PHP_LDFLAGS" \
 	; \
+    chmod +x docker-php-source; \
 	docker-php-source extract; \
 	cd /usr/src/php; \
 	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
diff --git a/8.1/Dockerfile b/8.1/Dockerfile
index 62d49e2..a541708 100644
--- a/8.1/Dockerfile
+++ b/8.1/Dockerfile
@@ -88,7 +88,7 @@ RUN set -eux; \
 	\
 	apk del --no-network .fetch-deps
 
-COPY docker-php-source /usr/local/bin/
+COPY docker-php-source /usr/local/bin/docker-php-source
 
 RUN set -eux; \
 	apk add --no-cache --virtual .build-deps \
@@ -110,6 +110,7 @@ RUN set -eux; \
 		CPPFLAGS="$PHP_CPPFLAGS" \
 		LDFLAGS="$PHP_LDFLAGS" \
 	; \
+    chmod +x docker-php-source; \
 	docker-php-source extract; \
 	cd /usr/src/php; \
 	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \