diff --git a/2.2/alpine3.4/Dockerfile b/2.2/alpine3.4/Dockerfile
index 5c019e558a..a25c71e58a 100644
--- a/2.2/alpine3.4/Dockerfile
+++ b/2.2/alpine3.4/Dockerfile
@@ -75,11 +75,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .ruby-rundeps $runDeps \
 		bzip2 \
diff --git a/2.3/alpine3.4/Dockerfile b/2.3/alpine3.4/Dockerfile
index 2096297936..3132595c67 100644
--- a/2.3/alpine3.4/Dockerfile
+++ b/2.3/alpine3.4/Dockerfile
@@ -75,11 +75,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .ruby-rundeps $runDeps \
 		bzip2 \
diff --git a/2.4/alpine3.4/Dockerfile b/2.4/alpine3.4/Dockerfile
index be255fa956..2d2de017dc 100644
--- a/2.4/alpine3.4/Dockerfile
+++ b/2.4/alpine3.4/Dockerfile
@@ -75,11 +75,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .ruby-rundeps $runDeps \
 		bzip2 \
diff --git a/2.4/alpine3.6/Dockerfile b/2.4/alpine3.6/Dockerfile
index 16a22a6455..9d5e8ce4d2 100644
--- a/2.4/alpine3.6/Dockerfile
+++ b/2.4/alpine3.6/Dockerfile
@@ -75,11 +75,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .ruby-rundeps $runDeps \
 		bzip2 \
diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index aacd95d1f9..9eccd7b431 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -75,11 +75,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .ruby-rundeps $runDeps \
 		bzip2 \